The claim is often stated like this: according to an early sira report, some of the pagan leaders of Makkah sought questions from Jewish scholars in Yathrib (Madinah) that might test Muhammad (PBUH). The report presents three subjects: the young men of the cave, the ruler who travelled westward and eastward, and the ruh. The Quran addresses the first two in Surah al-Kahf and the third in Surah al-Isra, but this summary should be attributed to that early report rather than presented as an independently established account in every detail. "Rabbis" is a loose English label here; the sources speak more generally of Jewish scholars.

This is an interesting argument, but it must be handled honestly. The broad story appears in early sirah and tafsir literature, but its chains are not of the same strength as rigorously authenticated hadith in al-Bukhari or Muslim. So the case should not be overstated. What can be said is more careful - and, in my view, more persuasive.

The claim as its proponents state it

The report appears in early sira material associated with Ibn Ishaq, as preserved in later transmission, and in tafsir discussions of the opening of Surah al-Kahf. Its versions do not form one hadith with a single uniformly authenticated chain; some are transmitted in historical or exegetical forms rather than through a chain meeting the standards used for sahih hadith. It is therefore useful evidence for how early Muslims understood the setting, but it should not be cited as though every detail were established at the level of a report in Sahih al-Bukhari or Sahih Muslim. In summary, the Quraysh were disturbed by the Prophet's (PBUH) message and allegedly sought expert help from Jewish scholars of Yathrib, who advised questions intended to distinguish a true prophet from an imposter:

  • Who were the young men who took refuge in a cave and slept for a long period?
  • Who was the ruler who journeyed westward and eastward and dealt with the people threatened by Ya'juj and Ma'juj (Gog and Magog)?
  • What is the nature of the ruh - the soul or spirit?

According to the report, the Prophet (PBUH) said he would answer them, but did not say "if Allah wills." Revelation was then delayed, causing distress, until Surah al-Kahf was revealed with the story of the Sleepers and the story of Dhul-Qarnayn. The Qur'an also gave the answer about the ruh:

"And they ask you concerning the soul. Say: The soul is of the affair of my Lord, and you have not been given of knowledge except a little." (Qur'an 17:85)

That is the argument in its strongest form: Prophet Muhammad (PBUH), who was not known to have studied written Jewish or Christian scriptures, was confronted with questions associated with scriptural traditions and delivered answers preserved in the Quran with theological depth and literary power. The argument is not that no one in Arabia had heard such stories, nor that the early report is fully authenticated; it is that the Quran's form and reframing are difficult for believers to explain as ordinary borrowing. A sceptic may disagree with that inference, but this is the claim that should actually be assessed.

The Qur'anic answers

The young men in the cave

Surah al-Kahf begins its first major narrative with the story of believing youths who fled a corrupt society to preserve their faith. Allah caused them to sleep in a cave for many years, then awakened them as a sign of resurrection and divine power.

"Or have you thought that the companions of the cave and the inscription were, among Our signs, a wonder? When the youths took refuge in the cave and said: Our Lord, grant us mercy from Yourself and prepare for us right guidance in our affair." (Qur'an 18:9-10)

The Qur'an does not tell the story as mere folklore. It uses it to teach tawhid, trust in Allah, the reality of resurrection, and the courage of young believers under pressure. It also corrects the habit of arguing over irrelevant details:

"They will say: They were three, the fourth of them being their dog; and they will say: Five, the sixth of them being their dog - guessing at the unseen; and they will say: Seven, and the eighth of them was their dog. Say: My Lord knows best their number. None knows them except a few." (Qur'an 18:22)

This is important. The Qur'an does not present itself as a collector of antiquarian curiosities. It gives enough detail to identify the story, but it shifts the reader away from speculation and toward guidance.

The traveller to the east and west

The second narrative is introduced explicitly as an answer to a question:

"And they ask you about Dhul-Qarnayn. Say: I will recite to you about him a remembrance." (Qur'an 18:83)

Dhul-Qarnayn is described as a just and powerful ruler whom Allah established on earth. He travels to the west, then the east, then reaches a people threatened by Ya'juj and Ma'juj - Gog and Magog - and builds a barrier to restrain them by Allah's permission. Again, the moral lesson is central: worldly power is a trust, justice is obligatory, and even the mightiest works of kings will end when Allah's decree arrives.

"He said: This is a mercy from my Lord. But when the promise of my Lord comes, He will make it level; and the promise of my Lord is ever true." (Qur'an 18:98)

Muslim scholars have differed over the historical identity of Dhul-Qarnayn. Some early exegetical and historical works identified him with Alexander, but this is not a settled Islamic doctrine: the historical Alexander of Macedon is generally understood as a pagan ruler, and his known biography does not fit easily with the Quranic portrait of a ruler who acknowledges his Lord and acts justly. Other scholars, especially in modern times, have proposed Cyrus, while others have rejected both identifications. The Quran gives no name, date, or unambiguous historical marker that settles the issue. The safer position is to affirm what the Quran affirms and avoid certainty where Allah and His Messenger (PBUH) did not give it.

The soul

The third question receives a very different answer. The Quran uses ruh in more than one context, including for revelation and the angelic messenger; in 17:85, classical exegetes commonly understood it as the human spirit. They explained "of the affair of my Lord" in terms of Allah's command or creation and, above all, as a statement that the spirit's full reality is beyond the knowledge granted to human beings. The verse is therefore not a philosophical or anatomical definition; it sets a limit on human knowledge without denying reflection.

"And they ask you concerning the soul. Say: The soul is of the affair of my Lord, and you have not been given of knowledge except a little." (Qur'an 17:85)

There is a rigorously authentic hadith connected to this verse. Abdullah ibn Mas'ud reported that he was walking with Prophet Muhammad (PBUH) in Madinah when some Jews urged one another to ask about the ruh. Prophet Muhammad (PBUH) paused while revelation came, then recited 17:85. The report is sahih and is recorded in Sahih al-Bukhari and Sahih Muslim. It establishes this Jewish question about the ruh; it does not identify the questioners as the same delegation in the early three-question sira report.

This sahih narration proves that Jewish questioners did ask the Prophet (PBUH) about the soul and that Qur'an 17:85 was given as the answer. It does not, by itself, prove the full three-question Makkah episode exactly as popularly told. That distinction matters.

What is strong about the argument?

The strongest form of the argument is not that every detail of the popular story has the highest hadith grading. Rather, it is this:

  • The Qur'an demonstrably engages questions and narratives known among scriptural communities, not merely local Makkan pagan concerns.
  • The Prophet (PBUH) was not known as a reader of Jewish and Christian books, nor as someone trained by rabbis or monks. The Qur'an itself repeatedly addresses accusations that he was taught by others.
  • The Quran's presentation is selective and theologically integrated rather than a catalogue of names and dates: it is morally focused and often deliberately restrained where people crave unnecessary details. That literary and theological transformation may support a believer's case for revelation, but it does not by itself rule out oral transmission or other human routes of access.
  • The answer about the soul is especially striking: it refuses speculative metaphysics while exposing the limits of human knowledge before Allah.

The Qur'an's approach to the Sleepers is also notable. Versions of the Sleepers story circulated in Christian late antique tradition. A sceptic may say, "This was not secret knowledge." That is true: the point should not be exaggerated as if nobody on earth knew the story. But the Qur'an's treatment is still remarkable in its context. It places the story within a pure monotheistic framework, avoids dependence on disputed names and numbers, and turns it into an argument for resurrection and steadfast faith.

The same is true for Dhul-Qarnayn. The Qur'an is not primarily giving a travel diary; it is presenting a model of power under divine accountability. Whether one can identify him historically with confidence is secondary to the Qur'an's purpose.

The strongest counterargument

A thoughtful sceptic can raise several serious objections.

First, the full story of the Quraysh consulting the rabbis and receiving three questions is not established by the highest level of hadith authentication. It appears in early historical and tafsir reports, but early sirah material often contains reports whose chains require caution. Therefore, one cannot responsibly say, "This entire incident is sahih in every detail," unless one is speaking more loosely than hadith scholarship allows.

Second, the stories of the Sleepers and a great world-travelling ruler were part of the broader late antique world. Arabia was not sealed off from Syriac Christian, Jewish, and other Near Eastern traditions. Trade, poetry, travel, and religious minorities all transmitted stories orally. So a sceptic may argue that Muhammad (PBUH) could have heard such material indirectly.

Third, the reply about the soul may look, to a hostile reader, like an evasion: instead of explaining what the soul is, the Qur'an says its reality belongs to Allah's affair.

These are not foolish objections. They are the strongest objections and should be answered fairly.

A careful reply

On the first objection: yes, the popular three-question narrative should be presented with caution. The more certain claim is narrower: the Qur'an contains the relevant answers, and a sahih hadith confirms that Jews asked about the soul and that Qur'an 17:85 was revealed as the answer. The wider sirah report is historically meaningful as an early Muslim explanation of the context, but it is not the same as a mutawatir fact or a rigorously authenticated hadith report.

On the second objection: oral transmission is possible. Islam does not require us to claim that no one in Arabia had ever heard a version of these stories. The more compelling point is the Qur'an's transformation of the material. It does not merely repeat legends. It selects, corrects, omits, and reframes. It refuses useless argument over the number of the Sleepers. It presents Dhul-Qarnayn as accountable to Allah, not as a mythic hero to be worshipped or romanticised. It answers the soul question by humbling human pretension rather than satisfying speculative curiosity.

On the third objection: the answer about the soul is only an evasion if the test required a material definition. The Quran's answer can instead be read as a claim about the limits of human knowledge, and it is philosophically serious in that respect. But this should not be turned into a scientific proof: the ruh is not simply identical, by anything stated in the verse, to consciousness as studied in neuroscience, and the difficulty of explaining consciousness does not by itself establish the Quran's divine origin. The Quran is not saying, "Do not think"; it is directing thought away from the pretence that finite investigation can exhaust what Allah has not disclosed. That is an argument for intellectual humility, not a substitute for evidence.

What this does and does not establish

This argument does not establish, by itself, that every detail of the famous three-question episode is historically certain. Nor does it prove that the Qur'an mentions stories totally unknown in the surrounding world. Popular da'wah sometimes overstates the case when it presents these narratives as if they were completely inaccessible secrets.

What it does establish is more modest but still powerful: the Qur'an answers scriptural and philosophical questions in a way that is coherent, confident, and spiritually transformative. It shows knowledge of themes beyond the Prophet's (PBUH) immediate pagan environment, yet it does not sound like a student copying from rabbis or monks. It speaks with its own authority. It corrects the questioner as much as it answers the question.

For a believer, this is one sign among many that the Quran is revelation. For a sceptic, it may not be a knock-down proof in isolation, but it raises a serious historical and literary question: how should we account for a text delivered by Prophet Muhammad (PBUH), who was not known to have studied written Jewish or Christian scriptures, yet which engages themes circulating in Late Antiquity with a distinctive theological form? The existence of parallels does not settle that question for either side; it is one consideration within the wider case for or against revelation.

Conclusion

The story of the three questions is best used carefully. The Qur'an certainly addresses the Sleepers, Dhul-Qarnayn, and the soul. A sahih hadith confirms Jewish questioning about the soul. The broader "three-question test" is found in early sirah and tafsir, but should not be presented as more authenticated than it is.

Even with that caution, the sign remains meaningful: the Qur'an did not merely answer questions; it redirected them toward Allah, resurrection, humility, justice, and the limits of human knowledge. That is the Qur'an's miracle - not trivia, but guidance.