In this article, we will explore Imam an-Nawawi's Forty Hadith one by one, uncovering their meanings and the Quranic wisdom behind them. Whether you're a new Muslim or a lifelong believer, these timeless words will inspire you. They show how Islam nurtures sincerity, kindness, justice, and God-consciousness in every aspect of life. By learning these hadith, we can strengthen our faith, improve our character, and appreciate the divine wisdom that has guided Muslims for generations. Let's dive into the first hadith and discover why intention lies at the heart of every deed.
Imam Nawawi and the Significance of the Forty Hadith
Imam Yahya ibn Sharaf al-Nawawi (1233-1277) was a great Islamic scholar known for his piety, knowledge, and service to the faith. He lived in Syria in the 13th century and followed the Shafi'i school of jurisprudence. Despite a short life, Imam Nawawi authored many important works, the best known include Riyad as-Salihin (Gardens of the Righteous) and his commentary on Sahih Muslim. Among his contributions, the Forty Hadith stand out as a gift to the Ummah (Muslim community). Imam Nawawi selected forty-two fundamental hadith and compiled them into one collection. Each chosen hadith, in his view, expresses a core "axis" or principle of Islam. In his introduction, Imam Nawawi wrote that it was his "explicit aim that each hadith is a great fundament of the religion, described by scholars as being 'the axis of Islam' or 'half of Islam' or a third of it… and [I made it] a rule that these forty hadith be sound (sahih)." In other words, he picked only authentic hadith that convey the most important teachings of Islam .
Compiling forty hadith was a respected tradition among scholars. It was inspired by a saying (though a weak narration) that "whoever memorizes forty hadith for my nation, I (the Prophet) will be an intercessor for him on Judgment Day." Many scholars compiled their own sets of forty hadith on various topics, but Imam Nawawi's collection became the most famous in the Muslim world. This is because Imam Nawawi was a widely revered authority in Islamic law and hadith, and he carefully chose sayings that cover the foundations of faith, worship, ethics, and spirituality. Over the centuries, Muslims from all schools of thought have studied these hadith as part of their basic religious education. Scholars across the Sunni world (from Hanafi to Hanbali) wrote commentaries on Nawawi's Forty Hadith, reflecting its universal acceptance. Even today, teachers give sermons and lessons on these hadith, finding them an excellent introduction to Islam's core values.
Each hadith in the collection usually includes the original Arabic text, an English translation, and often some commentary in published editions. Most of these sayings were originally recorded in the major hadith collections of Imam Bukhari and Muslim, which indicates their high authenticity and status. To help us appreciate their depth, we will provide relevant Quran verses alongside each hadith, as the Quran is the primary source that these teachings are derived from or supported by. As you read, you'll notice how the hadith and Quran perfectly complement each other, showing that the Prophet (ﷺ) truly lived and explained the message of the Quran. Through these forty hadith, Imam Nawawi succeeded in presenting a complete guide to being a good Muslim: believing correctly, worshipping sincerely, and interacting with others with the best character. Let us now explore the first hadith, which reminds us that everything in our lives boils down to our intentions.
Sincere Intentions - The First Hadith
The very first hadith in Imam Nawawi's collection stresses the importance of intention. It teaches that our actions are empty shells without sincere intentions for the sake of Allah. The Prophet Muhammad (ﷺ) said:
"Actions are only by intentions, and each person will have only what he intended. So whoever's migration was for Allah and His Messenger, then his migration is for Allah and His Messenger. But whoever's migration was for some worldly gain or for a woman to marry, then his migration is for whatever he migrated for." (Narrated in Sahih Bukhari & Muslim)
This profound statement highlights that the value of any deed, whether prayer, charity, or even mundane acts, depends on one's inner motive. A person could perform the same outward act as another, yet only one of them gains Allah's acceptance, due to having a pure intention. The Quran echoes this principle of sincere devotion:
"They were commanded only to worship Allah, being sincere to Him in religion, inclining to truth, and to establish prayer and to give zakah - and that is the correct religion." (Quran 98:5)
Islam teaches that we should do everything seeking the pleasure of Allah alone, not for show, pride, or worldly benefit. Imam Nawawi put this hadith first because sincerity is the foundation of all good deeds. In fact, scholars say this hadith is "one of the axes of Islam", meaning many rulings and teachings revolve around it. If our intention is pure, even small deeds become great. But if our intention is corrupt (for example, giving charity to impress people), then even big deeds lose their value. We learn from this that Muslims must constantly check their hearts. Before doing anything, ask yourself: "Am I doing this truly for Allah?"
Setting the right intention can turn everyday actions into worship. For instance, working to feed your family can be an act of worship if your intention is to fulfill your duty to Allah. On the other hand, even explicitly "religious" acts like prayer or charity can be sinful if done for fame or reputation. Allah is Al-`Aleem (All-Knowing), He knows our innermost thoughts. The Prophet Muhammad (ﷺ) warned that hidden shirk (polytheism) is when a person embellishes their worship for others to see, instead of purely for Allah. The first hadith is a reminder that Islam is not about empty rituals; it's about devotion from the heart.
This teaching also brings great comfort: Allah rewards us based on intention even if circumstances prevent us from completing a good deed. If you sincerely plan to do a good act but cannot do it, Allah still writes it as a full good deed for you. On the flip side, someone with ill intentions earns sin even if their evil act fails. Everything comes back to the heart. As one verse says, "Allah will not accept [deeds] except from those who fear Him", meaning those who are sincere. In summary, we learn that a Muslim should live consciously and intentionally, aiming to please Allah in all matters. This inner focus on sincerity opens the door to Allah's acceptance and blessings.
The Pillars of Islam and the Levels of Faith
The second hadith in Nawawi's collection is famously known as the Hadith of Angel Jibril (Gabriel). In this remarkable narration, the angel Gabriel came to the Prophet (ﷺ) in human form, in front of the companions, to ask fundamental questions about Islam. Through this Q&A, the Prophet taught the basics of the religion: Islam (submission), Iman (faith), and Ihsan (excellence). The hadith goes into detail, so let's summarize its main points with the Prophet's words:
… Islam is to testify that none has the right to be worshiped except Allah and that Muhammad is the Messenger of Allah, to establish the prayer, to give zakah (charity), to fast the month of Ramadan, and to perform pilgrimage to the House (Ka'bah) if you are able to. … Iman (faith) is to believe in Allah, His angels, His books, His messengers, the Last Day, and to believe in predestination (Al-Qadr), both its good and its bad. … Ihsan is to worship Allah as if you see Him, for if you do not see Him, [know that] He surely sees you. (From the Hadith of Gabriel, Sahih Muslim)
In these concise answers, the Prophet (ﷺ) defined the entire spectrum of our religion. Islam (submission), in this context, refers to the outward practices, the famous Five Pillars of Islam. These five pillars are the foundation of a Muslim's worship and practice. They are confirmed again in another hadith:
"Islam is built upon five pillars: the testimony that there is no deity but Allah and Muhammad is Allah's Messenger, establishing the prayer, paying the zakah, performing the Hajj (pilgrimage) to the House, and fasting in Ramadan." (Sahih Bukhari & Muslim)
Each pillar is strongly established in the Quran. For example, the Quran commands prayer and zakah together in many verses, enjoins fasting in Ramadan, and makes Hajj obligatory for those able to perform it. It all begins with the testimony of faith (Shahadah), sincerely declaring that only Allah is God and Muhammad (ﷺ) is His Messenger. This testimony is implied throughout the Quran, such as:
"So know [O Muhammad] that there is no deity except Allah." (Quran 47:19)
"Establish prayer and give zakah and bow with those who bow [in worship]." (Quran 2:43)
"O you who believe, fasting is prescribed for you as it was prescribed for those before you, that you may become righteous." (Quran 2:183)
"Pilgrimage to the House [in Makkah] is a duty that mankind owes to Allah, for whoever is able to find a way there." (Quran 3:97)
With these pillars, a Muslim nurtures their relationship with Allah daily (through prayer), yearly (fasting Ramadan and paying zakah annually), and once-in-a-lifetime (Hajj, if possible). They are the framework of worship that keeps one's faith strong.
Next, the Prophet (ﷺ) described Iman (faith), the inner beliefs that a Muslim holds in their heart. These are often called the Six Articles of Faith: belief in Allah, His angels, His revealed books, His messengers, the Last Day (Day of Judgment and afterlife), and belief in divine decree (Qadar). These correspond to essential Islamic theology, for example, knowing that Allah is One and All-Powerful, that angels exist and serve various duties, that Allah sent down scriptures (like the Torah, Gospel, and Quran) and prophets (like Noah, Abraham, Moses, Jesus, and Muhammad, peace be upon them all) to guide mankind. Belief in the Last Day means believing in resurrection, Heaven and Hell, and ultimate justice. Belief in predestination means understanding that everything happens by Allah's will and wisdom, whether we perceive it as good or bad. The Quran encapsulates many of these beliefs in one verse:
"Righteousness is not [merely] to turn your faces to the east or west, but [true] righteousness is one who believes in Allah, the Last Day, the angels, the Book, and the prophets, and gives wealth in spite of love for it to relatives, orphans, the needy, the traveler, those who ask [for help]… and who establishes prayer and gives zakah…" (Quran 2:177)
Notice how this Quranic verse lists core beliefs and ties them to charitable actions, showing that faith and practice go hand in hand.
Finally, the Prophet defined Ihsan (excellence) as the spiritual quality of worshipping Allah as though you see Him, being ever-conscious of His presence. This is the highest level of faith, one of deep awareness and sincerity. Even when we cannot see Allah, we know that "Allah sees us". Ihsan pushes a believer to perfect their worship and character, because they realize Allah is watching at all times. It's about excellence and sincerity when no one else is around. As the Quran says, "Indeed, Allah is with those who fear Him and those who are doers of excellence (muhsineen)." And in another verse, "Allah loves the muhsineen." When you pray or do any good deed with ihsan, you do it wholeheartedly, focused, as if standing before Allah in person.
The Hadith of Gabriel doesn't stop there, after the Prophet answered the questions about Islam, Iman, and Ihsan, Gabriel (as the questioner) asked, "Tell me about the Hour (the Day of Judgment)." The Prophet (ﷺ) replied that the one being asked knows no more about its timing than the questioner, meaning only Allah knows when the Hour will occur. Then Gabriel asked about its signs, and the Prophet mentioned two signs: (1) "That a slave woman will give birth to her mistress," and (2) "That you will see the barefoot, naked, destitute shepherds competing in constructing tall buildings." These cryptic prophecies indicated social upheaval: the first sign is understood to mean roles in society will be reversed or family structure will degrade (children arrogantly ruling over their mothers). The second sign intriguingly describes how poor desert wanderers would one day build skyscrapers, a phenomenon we indeed witness in places like Arabia today! This foresight is a subtle miracle, as it was unimaginable in the Prophet's time that Bedouin herders would erect some of the world's tallest towers. Yet over 1400 years later, in regions like the Arabian Peninsula, formerly poor tribes are competing to build the tallest buildings on Earth. It's a sober reminder of the Prophet's truthfulness and the coming of the Last Day.
When the conversation ended, the Prophet revealed to his companions that the questioner was actually the angel Gabriel, who "came to teach you your religion." Through this one hadith, we gain a comprehensive overview of Islam. Imam Nawawi placed it at the start of his collection (Hadith #2) because it neatly summarizes what every Muslim must know: the acts of worship we practice (Islam), the beliefs we hold (Iman), and the quality of spirit we aspire to (Ihsan). It shows the harmonious structure of Islam, from its outward pillars to inward faith to spiritual excellence. A believer should strive to strengthen all three levels: perform the pillars diligently, deepen one's understanding and conviction in the six beliefs, and cultivate a state of ihsan in daily life.
Belief in Divine Destiny and Trust in Allah
Belief in Al-Qadar (Divine Destiny or Predestination) is a key part of our faith, as mentioned in the Hadith of Gabriel. But understanding destiny can be challenging, it raises questions about free will and fate. Another hadith in Imam Nawawi's collection (often listed as Hadith #4) provides insight. It describes how each human being's destiny is written even before birth:
"The creation of each of you is brought together in your mother's womb for forty days as a drop (of fluid), then as a clinging clot for a similar period, then as a lump of flesh for a similar period. Then the angel is sent and breathes the soul into it, and the angel is commanded to write four things: the person's provision (sustenance), their lifespan, their deeds, and whether they will be happy or wretched (in the Hereafter). By Allah - there is no deity but Him - one of you may do the deeds of the people of Paradise until he is only an arm's length away from it, then the decree overtakes him and he does the deeds of the people of Hellfire and enters it. And one of you may do the deeds of the people of Hell until he is an arm's length away from it, then the decree overtakes him and he does the deeds of the people of Paradise and enters it." (Agreed upon, Sahih Bukhari & Muslim)
This hadith is sobering and thought provoking. It tells us that Allah's knowledge and decree encompass everything about us (our entire life story) before we are even born. The stages of embryonic development are described (interestingly, in 40-day phases), and at about 120 days the soul is given to the fetus and its destiny is recorded by an angel. This does not mean that our choices are irrelevant or that Allah forces us to do good or bad. Rather, Allah's infinite knowledge allows Him to know exactly what we will do out of our own free will, and His decree is always in line with His justice and wisdom.
The Prophet's (ﷺ) oath in this hadith ("By Allah… one of you may do the deeds of Paradise…") highlights that a person's final actions are what matter most. Someone might live righteously for a long time, but then turn to evil at the end (may Allah protect us), or vice versa. We cannot take our current state for granted; only Allah knows our future. Therefore, we should stay humble and reliant on Allah's guidance. We should never pridefully assume, "I'm definitely going to Heaven," nor despair, "I'm doomed to Hell no matter what." Instead, we keep striving in obedience and praying for a "good end." The hadith underscores that guidance is ultimately in Allah's hands, a person will enter Paradise or Hell based on what Allah knew they would finally do. It teaches us both humility (never be complacent in your goodness) and hope (even a sinner can repent and turn their life around). As one classical scholar commented, "It's not how you begin the race, it's how you finish."
Believing in destiny (Qadar) goes hand-in-hand with trusting Allah (tawakkul). We believe nothing befalls us except what Allah has written, and that Allah always knows what is best for us. The Quran says:
"No calamity strikes except by permission of Allah. And whoever believes in Allah - He will guide his heart. And Allah knows all things." (Quran 64:11)
"And whoever puts his trust in Allah - He is sufficient for him." (Quran 65:3)
Another hadith in the collection (Hadith #19, narrated by Ibn Abbas) beautifully emphasizes trusting Allah and seeking His help alone:
"Be mindful of Allah, and He will protect you. Be mindful of Allah, and you will find Him in front of you. If you ask, ask Allah. If you seek help, seek it from Allah. And know that even if the whole world gathered together to benefit you, they could not benefit you except with what Allah has already written for you. And if they gathered together to harm you, they could not harm you except with what Allah has already written against you. The pens have been lifted and the pages have dried." (Reported in Tirmidhi, Hasan)
This hadith, addressed to a young companion, Abdullah ibn Abbas, instills a deep sense of reliance on Allah. It reminds us that Allah is the sole controller of all benefit and harm. Nothing happens to us outside His will. Therefore, a believer should not fear people or the future in an extreme way, rather, we prepare and take precautions, but our heart remains tranquil knowing that Allah is in control. If we are mindful of Allah (fulfilling His commands and avoiding sin), we can trust that He will "protect" us and guide us through difficulties. Even when facing hardships, we have faith that there is wisdom in Allah's decree, and perhaps a hidden good.
Such belief gives a Muslim unshakable confidence and peace. It doesn't breed laziness or fatalism, but rather courage. The Prophet (ﷺ) said: "Strive for what benefits you, seek Allah's help, and do not give up. If something befalls you, don't say 'If only I had done such-and-such,' rather say 'Qaddar Allah wa ma sha'a fa'al (Allah decreed and He does as He wills).'" This mindset frees a person from constant worry over "what-ifs" and regrets. We do our best, then leave the outcome to Allah. We know that whatever happens (success or setback) is ultimately for our good if we remain believers, because it's part of Allah's perfect plan.
The concept of Qadar also reminds us not to judge people prematurely. Only Allah knows how someone's life will end. A person might appear sinful today but later become a great saint; another might appear pious but later falter. Thus, we stay humble, never despair of Allah's mercy, and never look down on others as "lost causes." The doors of repentance are open until our final breath, but we don't know when death will come, so we act now to do the right thing.
In summary, these hadith about destiny and trust teach us balance: Work righteously with hope in Allah, accept what He decrees with patience, and always rely on Him. As the Quran states, "In Allah let the believers put their trust." (Quran 3:160) True reliance (tawakkul) means tying your camel (doing your part) and then having full faith in Allah's care. This combination of belief in Qadar and trust in Allah brings contentment. A devoted Muslim strives for good in this life and the next, but when results are out of their hands, they say "Alhamdulillah, Allah knows best." Such faith is empowering, it helps us overcome anxiety and persist in doing right, which is exactly what Allah wants from us.
Adhering to the Prophet's Path (Sunnah)
Islam is not only about personal spirituality; it also stresses strict adherence to the authentic teachings that Prophet Muhammad (ﷺ) brought. Muslims believe that the Prophet was guided by Allah in all that he conveyed, so following his Sunnah (example) is a crucial part of the religion. Imam Nawawi included a hadith (narrated by Aisha, the Prophet's wife) that underlines this principle:
"Whoever introduces into this affair of ours (Islam) something that is not from it, it is rejected." (Sahih Bukhari & Muslim)
In another wording, the Prophet (ﷺ) said: "Whoever does an act that we have not commanded, it will be rejected." These statements make it clear that religious innovations (bid'ah), inventing new forms of worship or beliefs that have no basis in the Quran and Sunnah, are not acceptable to Allah. Islam's purity is preserved by sticking to the teachings of the Prophet and the guidelines he set. Over the generations, whenever some people tried to add or change things in the religion, scholars would quote this hadith as a warning. The beauty of Islam is that it's complete and perfect as-is; it doesn't need human improvisation. Allah says in the Quran, "This day I have perfected for you your religion and completed My favor upon you." (Quran 5:3) Therefore, a believer shows love for Allah by obeying the Messenger in the established way:
"Whatever the Messenger gives you - take it; and whatever he forbids you - abstain from it. And fear Allah; indeed, Allah is severe in penalty." (Quran 59:7)
The Quran repeatedly commands us to "obey Allah and obey the Messenger". Following the Prophet's sunnah is a sign of true faith and love for Allah. Allah says: "Say (O Muhammad), if you love Allah, then follow me, and Allah will love you and forgive your sins." (Quran 3:31). Thus, we don't twist or modernize Islam to suit our whims; instead, we humbly follow the Prophet's path, trusting that his way is the best way.
Another hadith from Nawawi's collection emphasizes not only avoiding innovation, but also not being unnecessarily strict or obsessive in religious matters. The Prophet (ﷺ) advised moderation and obedience within one's capacity:
"What I have forbidden you - avoid it entirely. And what I have commanded you - do as much of it as you are able. Those before you were only destroyed by their excessive questioning and disagreeing with their prophets." (Sahih Bukhari & Muslim)
This wise guidance balances the previous point. It reminds us that Islam is meant to be followed as is, without distortion, but also without undue hardship or nitpicking beyond what Allah has asked. The Prophet forbade asking unnecessary, hyper-detailed questions that could lead to making things harder (for example, quibbling and hair-splitting about minor issues). He said excessive questioning and argumentation ruined earlier communities. Instead, a Muslim should hear and obey in a straightforward way. Do the obligations as best as you can; if you genuinely cannot do something, Allah does not burden you beyond your capacity. For instance, if a person is sick and cannot fast, they are excused from fasting until health returns. If one cannot stand in prayer, they may sit. The Prophet (ﷺ) always chose the easier of two options when both were halal (permissible), to make religion easy for people, provided it didn't involve sin.
So, we learn two key lessons: (1) Don't innovate new practices or beliefs, stick to the Quran and authenticated Sunnah. (2) Don't explore obsessive questioning or make religion into a burden, follow the clear commands, avoid the prohibitions, and trust that Allah is Merciful with genuine shortcomings. This creates a faithful yet flexible approach: we are strict in keeping within the Prophet's teachings, but easy-going in how we apply them, always aiming for what Allah actually asked of us, not self-imposed extremes.
A powerful hadith often included at the end of the Forty Hadith collection sums up the spirit of complete submission. Although its chain of narration is debated, its meaning is sound and has been quoted by scholars for ages:
"None of you truly believes until his desires are in accordance with what I have brought." (Reported by Imam Nawawi in his Forty Hadith)
This means that a believer's full realization of faith is when they align their personal inclinations and wants with the teachings of Islam. Rather than trying to change Islam to fit our desires, we strive to change ourselves to fit Islam's guidance. When we reach a point where we want to do what Allah and His Messenger have commanded, and want to avoid what they forbade, that is a sign of true iman. It is not always easy; sometimes our ego or society's trends pull us in another direction. But the goal of a Muslim is to surrender to Allah's wisdom. We trust that the Prophet's way is the path to success in this life and the next, even if it goes against our initial desires. With time and practice, the heart actually finds peace and joy in following Allah's commands. As the Quran states:
"But no, by your Lord, they will not [truly] believe until they make you (O Muhammad) judge concerning that over which they dispute among themselves and then find in themselves no discomfort from what you have decided and submit fully." (Quran 4:65)
All four major Sunni schools of thought (Hanafi, Maliki, Shafi'i, Hanbali) are united in upholding the authority of the Sunnah and warning against bid'ah (unwarranted innovation). While they might differ on some interpretations of minor issues, none of them encourage creating new acts of worship or contradicting authentic hadith. They all stress following the evidence of Quran and Sunnah as understood by the early generations. This unity across schools shows that mainstream Islam is firmly rooted in the Prophet's teachings. By adhering to that solid foundation, we preserve the purity and unity of our faith.
Clarity in Halal and Haram - Avoiding Doubtful Matters
In our daily lives, we often encounter choices, some clearly permissible (halal), some clearly forbidden (haram), and some grey areas in between. One of the Forty Hadith (narrated by Nu'man ibn Bashir) gives a brilliant analogy to guide us in such situations:
"The lawful (halal) is clear and the unlawful (haram) is clear, and between the two are doubtful matters which many people do not know. Whoever avoids the doubtful matters has protected his religion and his honor. And whoever falls into the doubtful has fallen into the unlawful, like a shepherd who pastures near a sanctuary, about to cross into it. Indeed, every king has a sanctuary, and Allah's sanctuary is His prohibitions. Truly, in the body there is a piece of flesh which, if it is sound, the whole body is sound, and if it is corrupt, the whole body is corrupt - truly, it is the heart." (Sahih Bukhari & Muslim)
This profound parable teaches several lessons. First, Islam has clearly defined many things as halal or haram through the Quran and Sunnah. For example, halal clearly includes things like honest trade, permissible foods (such as livestock slaughtered in Allah's name), marital intimacy, etc. Haram clearly includes things like pork and wine, usury (interest), adultery, theft, unjust killing, and so on. The Quran says, "He has explained to you in detail what is forbidden to you, except under compulsion." (Quran 6:119). So generally, a Muslim has a good roadmap of what's allowed and what's not.
However, between these clear extremes, there are matters that are not obvious to the average person, maybe because they're new issues or there's a difference of scholarly opinion. The hadith calls these "mushtabihat" (doubtful or ambiguous matters). The Prophet (ﷺ) is advising us that caution is the best policy in such grey areas. If you deliberately stay away from things that might be haram (even if you're not 100% sure), you keep your conscience clear and avoid potentially falling into sin. This cautious approach "protects your religion and honor", meaning you won't end up doing something shameful or sinful that could tarnish your reputation or standing with Allah.
For example, imagine there's a type of food additive or a financial investment that some scholars have warned against but others have given qualified permission. It's a "doubtful matter" for you because you're not sure who's right. If you choose to avoid it out of piety, you've lost nothing significant, and you have peace of mind that you didn't risk doing haram. On the other hand, if someone is carefree with doubtful matters, it's like grazing sheep right at the edge of the king's private sanctuary, eventually the sheep will wander into the forbidden area. In life, if we keep stretching limits and saying "It's probably okay…", we may slip into actual wrongdoing without noticing.
The Prophet (ﷺ) then points to the heart as the key to moral judgment. If our heart is pure and God-fearing, we will feel uneasy about doubtful or sinful things, a kind of spiritual instinct or conscience. But if our heart is diseased (with greed, arrogance, etc.), we may easily justify or indulge in dubious matters. There's another short hadith that complements this:
"Leave that which makes you doubt for that which does not make you doubt. For truth brings peace of mind, while falsehood sows doubt." (Hadith Tirmidhi, Hasan)
And another one, narrated by Wabisa bin Ma'bad, where the Prophet gave advice about righteousness and sin:
"Righteousness is good character, and sin is that which wavers in your heart and which you do not want people to know about." (Sahih Muslim)
These teachings encourage us to use our God-given moral compass. If something feels "off" and we'd be ashamed for others to see it, that's a big red flag from our heart that it's likely sinful or at least Imam (faith) is not comfortable with it. A believer should cultivate a heart that is sensitive to these signals by remembering Allah often and learning the principles of halal and haram.
Of course, we are also taught not to be paranoid or overly scrupulous such that we see everything as doubtful. The hadith says "many people do not know" those matters, implying scholars do often have guidance on them. Islam encourages us to seek knowledge from qualified scholars when in doubt. The Quran instructs: "Ask the people of knowledge if you do not know." (Quran 16:43). If a trustworthy scholar clarifies that something is permissible, we need not burden ourselves with unwarranted misgivings. The point is not to live in constant anxiety, but to avoid clear dangers to our soul.
Practically, one can follow this: if an issue arises, check the Quran and authentic hadith for guidance. If unclear, see if respected scholars have issued verdicts. If still unclear or conflicting, lean toward the safer side for your heart's peace. And always pray Istikhara (the prayer for guidance) asking Allah to guide you to the right choice. Honest intention plays a role here too, if we sincerely want to please Allah, He will guide our hearts. The Quran promises: "And those who strive in Our cause, We will surely guide them to Our ways." (Quran 29:69).
In summary, Islam has given a clear moral framework (halal/haram), but for the grey areas, we are advised to exercise caution and listen to our conscience. By doing so, we honor Allah's boundaries and maintain the purity of our hearts. As the hadith of Nu'man ended, "truly it is the heart", a sound heart leads to a sound life. Keeping our hearts attached to Allah through Quran, prayer, and remembrance ensures that when a tricky situation comes, we have inner light to discern the right course. This concept is one of the beauties of Islam: it not only lays down laws, but nurtures an ethical mindset where a believer voluntarily leans toward good and away from doubtful evil out of love and piety.
Sincerity, Purity, and Goodwill in Religion
Islam is often described as a religion of sincerity and purity, sincerity towards God, and goodwill towards people. Another short but comprehensive hadith in Imam Nawawi's collection states:
"The religion is sincere counsel (nasiha)." We said, "To whom?" He (the Prophet) replied, " To Allah, His Book, His Messenger, and to the leaders of the Muslims and their common folk." (Sahih Muslim)
In this context, "nasiha" means sincerity, genuine advice, or seeking the best for others. The Prophet (ﷺ) essentially summed up our faith as having a sincere and faithful attitude in all relationships:
To Allah: Being sincere to Allah means truly dedicating our worship and obedience to Him. It includes loving Allah, obeying His commands, avoiding what He forbade, and always seeking His pleasure. It also means having correct belief about Him (His Oneness, His attributes) and not associating partners with Him. In essence, it's loyalty to Allah.
To His Book (Quran): Sincerity to the Quran means believing it is the true word of Allah, respecting it, reciting it properly, and implementing its teachings. It means we don't neglect the Quran or interpret it dishonestly. We uphold its guidance and defend it against misinterpretation. In our personal life, being sincere to the Quran is shown by reading it regularly, reflecting on its meanings, and acting upon it.
To His Messenger: Sincerity to Prophet Muhammad (ﷺ) means believing in him, loving him, and following his Sunnah. It includes defending his honor when he's insulted, spreading his teachings, and again, obeying him above all worldly influences. It also means studying his life (Seerah) and sending salawat (peace and blessings) upon him regularly. In short, a sincere Muslim keeps the Prophet's example as the model to emulate.
To the leaders of the Muslims: This refers to having sincerity toward those in authority among Muslims - whether it's the political leaders (rulers) or scholars and community leaders. It means to wish them well, advise them with honesty and respect when they err, help them in good deeds, and pray for their guidance and rectitude. It doesn't mean blind obedience if they do wrong, but it does mean maintaining unity and not betraying or undermining the community. In Islam, constructive advice (nasiha) to those in charge is encouraged (privately and gently, not through public humiliation), and so is obeying them in good matters. Essentially, we want our leaders to succeed in applying Islam justly - that intention is part of our faith.
To the common folk of Muslims: Finally, sincerity to everyday Muslims (the general public) means having goodwill towards them - wanting the best for them, advising them kindly, helping them when they need, protecting their rights, and interacting with them honestly. The Prophet (ﷺ) said: "None of you truly believes until he loves for his brother what he loves for himself." (We will discuss this hadith of brotherhood later.) This is the spirit of nasiha: no envy, no malice - rather, a genuine wish for everyone to flourish in goodness. It includes inviting each other to truth and guiding someone away from sin with compassion. The Quran praises those believers who "enjoin each other to truth and enjoin each other to patience" (Quran 103:3).
Thus, "The religion is nasiha" means Islam is all about being genuine and earnest in all these relationships. There's no room for treachery, hypocrisy, or ill will in a true Muslim's heart. You are true to Allah and His Messenger, and you are true to your fellow humans. Imagine a society where everyone sincerely wants the best for each other, that's what Islam strives to create.
Connected to sincerity is the concept of purity, both spiritual and physical. One hadith in the collection states:
"Verily, Allah is Pure and does not accept but what is pure. And indeed Allah has commanded the believers with what He commanded the Messengers, saying: 'O Messengers, eat from the good (lawful) things and act righteously' and saying 'O you who believe, eat from the good things We have provided for you.' Then the Prophet mentioned a man on a long journey, disheveled and dusty, who stretches his hands to the sky, saying 'O Lord, O Lord,' but his food is unlawful, his drink is unlawful, his clothing is unlawful, and he is nourished unlawfully - so how can [his supplication] be answered?" (Sahih Muslim)
This hadith emphasizes that Allah is Tayyib (absolutely pure and good), so He only accepts pure things, pure intentions, pure earnings, pure food, pure actions. It warns us that indulging in haram (like consuming illicit wealth or food) can deprive our acts of worship (like dua) of their effectiveness. The Prophet gives the example of a traveler in need (normally, traveling and being in hardship makes one's dua more likely to be answered), but because that man's income and sustenance were from haram sources, his desperate prayers are not answered. It's a stark reminder that as Muslims we must seek halal, pure sustenance and live ethically if we want Allah's blessings. Eating haram or earning haram acts as a barrier between us and Allah's mercy.
The verses quoted in the hadith are from the Quran:
"O Messengers, eat of the good things and do righteous deeds..." (Quran 23:51)
"O you who believe, eat from the good things We have provided for you..." (Quran 2:172)
Allah commanded even the prophets to consume only what is wholesome and lawful, tying it directly to doing righteous deeds. For common believers, the command is the same. So earning a halal living, eating halal food, and living a morally pure life are all part of being sincere to Allah.
Purity in Islam also includes physical cleanliness (wudu, ghusl, etc.) which is "half of faith" as another hadith says. But beyond bodily cleanliness, it's about the purity of one's income and heart. If a person's heart is pure, they will ensure their money comes from honest work, their charity comes from halal wealth, and their lifestyle is clean. Conversely, a corrupt heart might not mind cheating or consuming haram. That corruption then affects one's worship and connection to Allah.
Another related hadith from the Forty:
"Allah does not look at your bodies or your appearances, but He looks at your hearts and your deeds." (Sahih Muslim)
This means Allah values quality over looks or form. Sincere intention and righteous action matter far more than outward show or social status. One might fool people with appearances, but Allah sees the reality inside. So the true measure of a person in Islam is their inner sincerity (heart) and their actual deeds, not beauty, wealth, or lineage.
To sum up, Islam demands sincerity (ikhlas) in belief and action, and purity (taharah) in one's way of life. Our worship must be solely for Allah, not tainted by shirk or showing off. Our interactions with others must be for their betterment, not tainted by selfish motives or deceit. Our earnings and consumption should be halal and clean, not tainted by injustice or corruption. By adhering to these principles, a Muslim attains a heart that is "sound", which the Quran says is the only thing that will benefit one on the Day of Judgment (Quran 26:88-89). As we proceed, many upcoming hadith reinforce specific aspects of good character and dealings, all of which in reality stem from the sincere and pure heart that Islam nurtures.
Building Good Character and Personal Ethics
One of the most beautiful aspects of Islam is its emphasis on good character (akhlaq). The Prophet Muhammad (ﷺ) was sent to perfect good manners, and many of the Forty Hadith highlight virtues like kindness, modesty, and self-discipline. Islam guides us not just in rituals, but in how we conduct ourselves daily, how we control our temper, how we speak, and how we behave even when no one is watching.
A very short hadith in the collection (narrated by Abu Hurairah) carries a profound lesson on emotional self-control:
"A man said to the Prophet, 'Give me advice.' The Prophet (ﷺ) said, 'Do not become angry.' The man repeated his request several times, and each time the Prophet said, 'Do not become angry.'" (Sahih Bukhari)
This teaches us the importance of managing our anger. Anger itself is a natural human emotion, but when unchecked, it leads to regretful actions and words. By emphasizing "Don't get angry" repeatedly, the Prophet (ﷺ) was instructing the man (and all of us) to restrain our anger and not act on it. In practice, this might mean if something upsets us, we should pause, seek refuge in Allah from Satan, perhaps sit down or make ablution (techniques the Prophet advised elsewhere) rather than lashing out. A hadith says, "The strong man is not the one who wrestles well, but the strong man is one who controls himself when he is in a fit of anger." Indeed, controlling anger is a hallmark of a righteous person. The Quran praises those "who restrain their anger and pardon people, and Allah loves the doers of good" . If we reflect, so many sins and broken relationships could be avoided by mastering our anger: fights, abusive words, even violence. Thus, "don't become angry" is powerful, concise advice that leads to personal peace and social harmony.
Another key personal ethic is modesty or shame (haya') in the sense of healthy shyness and avoiding sin. The Prophet (ﷺ) said in a brief hadith:
"If you feel no shame, then do as you wish." (Sahih Bukhari)
This is like a litmus test for morality. It can be understood in two ways, as scholars note: (1) It might be a warning, if you have lost all sense of shame, you'll end up doing anything (meaning, lack of shame leads to immorality). Or (2) it can be a permissive statement, if an action causes you no shame (before Allah and people), then it's probably okay to do it. Either way, it underscores the value of haya', which the Prophet called "a branch of faith." Having shame (bashfulness to do wrong) is what stops us from lying, cheating, dressing immodestly, or engaging in indecent behavior. It's that inner voice that says, "This is inappropriate." Unfortunately, when someone loses that sense, when they no longer care about decency or others' rights, they become capable of any sin or crime openly. We see this in modern times: as the sense of shame diminishes in society, things once considered disgraceful become commonplace. Islam encourages us to maintain modesty in dress, speech, and conduct. Not as a form of shyness that prevents doing good, but as a guardrail against doing evil. A person with haya' will ask, "Would I do this if the Prophet or my parents were watching? More importantly, Allah is watching!" That hesitation itself is a mercy, steering us away from trouble. So, "if you feel no shame, do as you wish" comes as both a caution and a guideline, keep your sense of shame alive, and you'll stay on the right path.
Also central to good character is minding one's own business and avoiding meddling or prying into others' affairs. The Prophet (ﷺ) said:
"Part of the perfection of one's Islam is to leave that which does not concern him." (Hadith Tirmidhi, Hasan)
This means a true Muslim focuses on what's beneficial to their faith and life, and leaves off idle curiosity or interference in things that don't involve them. How much gossip, rumor-mongering, spying, and ill feelings can be avoided if we all followed this golden rule! The Quran warns against suspicion, spying, and backbiting, which often happen when people stick their noses into others' private matters. Islam teaches us to respect privacy and personal boundaries. Of course, this doesn't mean we shouldn't care about others (we should assist and advise when appropriate) but it means not snooping or getting involved in trivial matters that are not our responsibility. For example, endlessly scrolling social media drama, or eavesdropping on conversations, or insisting on knowing people's secrets, these are not the habits of a conscious believer. By leaving what doesn't concern us, we free up time and mental energy for things that do concern us: our own improvement, our family, community welfare, and remembrance of Allah. It brings peace of mind too. As the saying goes, "Silence is wisdom when speaking is not beneficial."
Now, consider another famous hadith that truly encapsulates personal ethics in Islam:
"Fear Allah wherever you are. Follow up a bad deed with a good deed - it will erase it. And treat people with good character." (Hadith Tirmidhi, Hasan)
This was advice the Prophet (ﷺ) gave to one of his companions (Mu'adh ibn Jabal, according to some reports). It covers our duty to Allah, to ourselves, and to others in one short narration. "Fear Allah wherever you are" means to be mindful of Allah in public and in private, among people or alone. It's a call to integrity, the same devotion you show at the mosque, carry it at home and at work. Allah is with you everywhere, seeing everything, so always act accordingly. If we keep that God-consciousness (taqwa), we'll think twice before sinning.
But since humans aren't perfect and will slip, the next line says, "Follow up a bad deed with a good one." This is a practical remedy: if you do mess up, immediately repent and do something good to wipe it out. Made a mistake? Pray two rak'ahs of repentance, give charity, help someone, say Astaghfirullah (seek forgiveness) sincerely. A good deed, big or small, done after a sin acts like water dousing a fire. Allah's mercy is so vast that a true repentance and a subsequent good act can erase the sin as if it never happened. This encourages us not to despair or languish after sinning, but to take positive action to reform. The Quran confirms, "Indeed, good deeds remove bad deeds." (Quran 11:114).
The final part, "treat people with good character," is a broad injunction to have excellent manners (husn al-khulq) with everyone. Good character includes honesty, humility, patience, generosity, gentleness, and fairness. The Prophet Muhammad (ﷺ) himself was the exemplar of good character, the Quran calls him "upon an exalted standard of character" (68:4). He said that the heaviest thing on the Day of Judgment in our scales will be good manners. Serving others, smiling, forgiving mistakes, and not hurting anyone with tongue or hand, these are all facets of good character. One of the companions asked the Prophet for a simple definition of goodness, and he responded, "Goodness is good character." Conversely, when he was asked about sin, he said, "Sin is what bothers your heart and you would hate for people to know about it.", tying back into that concept of inner conscience.
Let's not forget a key hadith from this collection related to character and faith:
"None of you truly believes until he loves for his brother what he loves for himself." (Sahih Bukhari & Muslim)
This hadith establishes an important principle: altruism and empathy are signs of true faith. "Brother" here means fellow Muslim, and in some interpretations, fellow humans in general. If you want good for yourself (such as safety, health, respect, guidance) you should equally want that for your brothers and sisters. It's a golden rule: treat others how you'd like to be treated. If we all applied this, injustice and selfishness would disappear. We wouldn't backbite (because who likes to be slandered?), we wouldn't cheat others (because we hate being cheated), and we would share blessings (because we'd hope others share with us). The Quran alludes to this spirit when praising the Ansar of Madinah: "They give preference to others over themselves, even if they themselves are in need." . That is the level of love and generosity Islam inspires, caring for others' welfare as much as our own.
Developing good character is a continuous process and a form of worship. We ask Allah in our prayers to guide us to the best manners and to remove bad traits from us. The Prophet used to pray, "O Allah, just as You have made my outward form beautiful, make my character beautiful." It's noteworthy that all four Sunni schools of thought stress the importance of refining one's character and consider these prophetic hadith about manners to be essential guidance. There might be slight differences in approaches (for example, how to correct anger, some say make wudu, some say change posture; all valid as the Prophet gave multiple tips), but they unanimously agree on the virtues being virtues and vices being vices. No school would ever say anger, arrogance or greed is okay, they all base on the same hadith and Quranic ethics.
To put it concisely: Islam doesn't only require us to pray and fast; it requires us to be good human beings. The measure of piety is not just a prayer mark on the forehead, but how we deal with others, our honesty, our kindness, our empathy, our self-restraint. As Prophet Muhammad (ﷺ) said, "The best of you are those who have the best character." And when he was asked what mostly causes people to enter Paradise, he replied, "Taqwa of Allah and good character."
By internalizing these teachings - don't get angry, be modest, mind your business, follow a bad deed with good, treat people well, love for others what you love for yourself, we can transform our behavior and relationships. In doing so, we reflect the beauty of Islam through our actions. This is a powerful form of Dawah (inviting others to Islam) as well; many people have embraced Islam because they were moved by a Muslim's honesty, generosity, or patience. Good character is something everyone can appreciate, and in Islam it is directly tied to one's devotion to God. In fact, every good character trait is in essence a manifestation of faith: we're honest because Allah forbids lying; we're kind because we hope for Allah's mercy; we're patient because we trust Allah's decree, and so on. Thus, personal ethics in Islam isn't a secular concept, it's deeply spiritual. Every time we resist anger or pride for Allah's sake, that's an act of worship from the heart.
Compassion and Brotherhood in Islam
Islam places tremendous emphasis on brotherhood, mutual rights, and compassion among people. The Muslim community (Ummah) is meant to be like a single body, supporting and caring for one another. Several of Nawawi's Forty Hadith teach us how to treat others and create a benevolent society.
We already touched on "love for your brother what you love for yourself," which fosters empathy. Extending that, the Prophet (ﷺ) taught practical ways to show love and mercy daily. In a wonderful hadith (often listed as #26 in the collection), he said:
"Each morning, every joint of yours must pay a charity. Reconciling between two people is charity. Helping a man onto his mount or lifting up his belongings onto it is charity. A good word is charity. Every step you take towards the prayer is charity. And removing a harmful object from the road is charity." (Sahih Bukhari & Muslim)
Consider how comprehensive this is. The human body has 360 joints (as noted in other narrations), and the idea is that we should thank Allah for our healthy body by doing acts of charity every day. But charity in Islam isn't limited to giving money (though that's very meritorious, of course). The Prophet (ﷺ) listed simple good deeds that count as sadaqah (charity) in Allah's sight:
Making peace or reconciling between people: e.g., mediating an argument, resolving a conflict fairly. Bringing hearts together is a huge good deed.
Helping someone with a physical task: e.g., helping a neighbor carry groceries, or aiding a coworker with their load. Any assistance is charity.
Speaking a good word: This includes saying something kind, uplifting, or beneficial to someone. Even just saying "Salam" (peace be upon you) cheerfully to a fellow Muslim is an act of charity. So is giving good advice or comforting someone sad. On the flip side, refraining from hurtful speech is also a charity to yourself and others.
Walking to the mosque for prayer: This underscores that acts of worship also benefit one's soul and count as charitable acts in a spiritual sense. (It also subtly encourages frequenting the mosque.)
Removing harm from the road: Something as small as picking up a broken glass or a rock from the path so others aren't hurt is considered a charity. In another hadith, the Prophet said this is one branch of faith - it springs from care for Allah's creation.
All these examples show that acts of kindness, big or small, are beloved to Allah. A Muslim is encouraged always to be looking for opportunities to do khayr (good). It transforms mundane tasks into worship. Smiling at someone, charity! Pouring water from your bucket into your brother's bucket, charity! Even the morsel of food you feed your spouse is an act of charity (the Prophet said that too). This positive outlook makes social interactions rewarding and infused with intention to please Allah. As an ummah, if each person tries to benefit others every day, the whole community flourishes in love and solidarity.
The hadith also implies being proactive: don't wait for someone to ask you for help if you see them struggling, go help them load that mount (in today's terms, help them with car trouble, etc.). Initiative in doing good is highly encouraged. The Quran says, "Race each other in good deeds."
We also find guidance on removing harm and avoiding causing harm. A fundamental principle given by the Prophet (ﷺ) is:
"There should be no harm and no reciprocating of harm." (Hadith Ibn Majah, Hasan)
In Arabic, "la darar wa la dirar." This concise rule, included in the Forty Hadith, is the basis of much of Islamic ethics and law. It means a Muslim is not allowed to harm others unjustly, nor to return harm for harm (beyond what justice permits). We must neither be oppressors nor malicious in taking revenge. All laws in Islam essentially aim to prevent harm, whether it's physical harm, financial harm, emotional harm, or harm to one's faith. For example, intoxicants are forbidden because they cause harm; lying and backbiting are forbidden because they harm trust and honor; pollution and wastefulness could be argued against with this hadith too because they harm the environment and people. "No harm" teaches us to be mindful of the impact of our actions. If something will harm others or ourselves, we should desist or find a permissible alternative.
Justice is also a form of compassion because it ensures rights are upheld. One hadith in the collection outlines an important legal maxim:
"If people were given (judgments) based on their claims, some would claim the wealth and blood of others. But the burden of proof is on the claimant, and the oath is upon the one who denies." (Hadith Baihaqi, Hasan)
This means in disputes, the person who makes an accusation or claim must bring evidence, and the defendant can clear themselves by an oath if there's no evidence against them. It's a cornerstone of justice in Islam, preventing false claims and misuse of law. While this sounds technical (for judges and courts), it carries a general moral: one should not accuse others without proof, and one should be truthful under oath. Accusing someone of something (especially crimes or dishonesty) is a big deal; you need solid evidence. Otherwise, you're potentially harming an innocent person's reputation or worse. So Islam puts the onus on the accuser to prove it, protecting people from frivolous or malicious claims. Meanwhile, an accused person's word is taken (with an oath) if there's no evidence to the contrary, this protects people from being unjustly punished. All four schools of Islamic law accept this principle, so it's a universally applied concept of fairness.
Now, focusing on brotherhood, the Prophet (ﷺ) gave many teachings to remove divisions and foster unity. He said, "Do not envy one another, do not hate one another, do not turn away from one another, but rather be servants of Allah as brothers." (Sahih Muslim