Muslims Defeat the Jews of Khaibar
In the same year the Jews of Khaibar, a strongly fortified territory at a distance of four days' journey from Medina, showed implacable hatred towards the Muslims. United by alliance with the tribe of Ghatfan, as well as with other cognate tribes, the Jews of Khaibar made serious attempts to form a coalition against the Muslims. The Prophet and his adherents were apprised of this movement and immediate measures were taken in order to repress any new attack upon Medina. An expedition of fourteen hundred men was soon prepared to march against Khaibar. The allies of the Jews left them to face the war with the Muslims all alone. The Jews firmly resisted the attacks of the Muslims, but eventually all their fortresses had to be surrendered, one after the other to their enemies. They prayed for forgiveness, which was accorded to them on certain conditions. Their lands and immovable property were secured to them, together with the free practice of their religion. After subduing Khaibar, the Muslims returned to Medina in safety.

The Believers' Pilgrimage to Mecca
Before the end of the year, it being the seventh year of the hijrah, the Prophet and his adherents availed themselves of their armistice with the Quraish to visit the holy Kaba. The Prophet, accompanied by two hundred Muslims, went to Mecca to perform the rites of pilgrimage. On this occasion the Quraish evacuated the city during the three days which the ceremonies lasted.
Sir William Muir, in his book, Life of Mohammed Vol. III comments on the incident as follows:
It was surely a strange sight which at this time presented itself at the vale of Mecca, a sight unique in the history of the world. The ancient city is for three days evacuated by all its inhabitants, high and low, every house deserted, and, as they retire, the exiled converts, many years banished from their birth-place, approach in a great body accompanied by their allies, revisit the empty homes of their childhood, and within the short allotted space, fulfill the rites of pilgrimage. The outside inhabitants, climbing the heights around, take refuge under tents or other shelter among the hills and glens; and clustering on the overhanging peak of Abu Qubeis, thence watch the movements of the visitors beneath, as with the Prophet at their head, they make the circuit of the Kaba and rapid procession between Essafa and Marwah, and anxiously scan every figure, if perchance they may recognize among the worshippers some long-lost friend or relative. It was a scene rendered possible only by the throes which gave birth to Islam.
In accordance with the terms of the treaty, the Muslims left Mecca at the end of three days' visit. This peaceful visit was followed by important conversions among the Quraish. Khalid Ibn Al-Walid, known as the Sword of Allah, who, before this, had been a bitter enemy of Islam and who commanded the Quraish cavalry at Uhud; and Amr Ibn Al'As, another important character and warrior, adopted the new faith.