In the rich tapestry of Islamic history, the conquest of Khaybar stands out as a significant event connected to prophetic foretelling in two related ways. First, after the Pledge of al-Hudaybiyyah, the Quran promised the believers a "near victory" and "abundant spoils"; many classical commentators identify the immediate spoils with Khaybar. Second, during the Khaybar campaign itself, Prophet Muhammad (PBUH) foretold that Allah would grant victory through the man to whom he would give the banner the next morning. Together, these reports place Khaybar within the larger turn of events that followed the Treaty of al-Hudaybiyyah.
The Prophecy
Reported by Sahl ibn Sa'd: On the day of Khaybar, Prophet Muhammad (PBUH) said, "Tomorrow I will give the banner to a man at whose hands Allah will grant victory. He loves Allah and His Messenger, and Allah and His Messenger love him." The Companions spent the night wondering who would receive it. In the morning, he called for Ali ibn Abi Talib, who was suffering from sore eyes; the Prophet (PBUH) treated him by Allah's permission, supplicated for him, and gave him the banner. Allah then granted victory at his hands. (Reported in Sahih al-Bukhari and Sahih Muslim)
The hadith above is rigorously authentic, being reported in both Sahih al-Bukhari and Sahih Muslim, and it directly concerns Khaybar. The broader Quranic setting is Surah al-Fath, revealed after al-Hudaybiyyah: "Allah was pleased with the believers when they pledged allegiance to you under the tree... So He sent down tranquillity upon them and rewarded them with a near victory, and abundant spoils that they would take" (Quran 48:18-19). The next verse adds, "Allah has promised you many gains that you will take, and He has hastened this for you" (Quran 48:20). Classical tafsir commonly identifies the immediate "near victory" or the hastened spoils in these verses with Khaybar, while also recognizing that Surah al-Fath speaks more broadly about the openings Allah granted after al-Hudaybiyyah.
Historical Circumstances
At al-Hudaybiyyah, the Muslims had travelled primarily as pilgrims, not as an army setting out for war; they carried only the arms normally taken by travellers and were prevented from entering Mecca that year. Many Companions found the treaty painful because some terms appeared to favor Quraysh. Yet the truce also removed the immediate threat from Mecca and created the strategic space for the Muslims to address Khaybar, a fortified oasis north of Medina whose leaders had been involved in hostile alliances against the Muslims. For this reason, a fair reading should not describe Khaybar as militarily impossible; rather, it was a serious and uncertain campaign against strong fortifications that became possible only in the new situation created by al-Hudaybiyyah.
Fulfillment of the Prophecy
The fulfillment occurred soon after al-Hudaybiyyah, when the Prophet Muhammad (PBUH) led the expedition to Khaybar in 7 AH. The campaign was not a single effortless assault; Khaybar consisted of a number of fortified strongholds, and the fighting and negotiations unfolded over a series of engagements. The Muslim forces eventually overcame the fortifications, and the settlement was concluded on terms under which the land continued to be cultivated by its inhabitants in return for a share of its produce. The result brought the Muslims significant resources and strengthened their position in Arabia. In this sense, Khaybar corresponds closely to the Quranic promise of immediate gains after al-Hudaybiyyah and to the specific hadith that Allah would grant victory at the hands of the banner-bearer.
Conclusion
For a fair-minded reader, the evidence should be presented with proportion. The Quranic promise after al-Hudaybiyyah is not a standalone military dispatch naming every detail of Khaybar; it is a revealed promise of a near opening and spoils, which many early and later commentators connected to Khaybar because of what happened immediately afterward. The hadith of the banner is more specific: before the victory was achieved, Prophet Muhammad (PBUH) foretold that Allah would grant it through the man to whom he would give the banner. The strength of the argument lies in these authentic and historically grounded reports, not in exaggerating the Muslims' weakness or claiming that every detail had been spelled out in advance.
A thoughtful sceptic may say that, once Quraysh had agreed to a truce, an expedition against Khaybar became strategically understandable. That point should be acknowledged. The sign is not that the campaign had no worldly causes, but that revelation framed the post-Hudaybiyyah turn as an opening and that the Prophet (PBUH) made a specific prediction of victory at Khaybar before it occurred. This balance allows the event to be appreciated as both sound history and a meaningful sign, without overstating the claim.