Sahih Bukhari Volume 005, Book 059, Hadith Number 554.
Hadith Section/Book: Sahih Bukhari Sahih Bukhari Book 59. Military Expeditions Led by the Prophet (PBUH) (Al-Maghaazi)
Narrated By Ibn 'Umar : Allah's Apostle set out with the intention of performing 'Umra, but the infidels of Quraish intervened between him and the Ka'ba, so the Prophet slaughtered his Hadi (i.e. sacrificing animals and shaved his head at Al-Hudaibiya and concluded a peace treaty with them (i.e. the infidels) on condition that he would perform the 'Umra the next year and that he would not carry arms against them except swords, and would not stay (in Mecca) more than what they would allow. So the Prophet performed the 'Umra in the following year and according to the peace treaty, he entered Mecca, and when he had stayed there for three days, the infidels ordered him to leave, and he left.