The Book of Pilgrimage (Kitab Al-Hajj)
Muslim :: Book 7 : Hadith 3146
Jabir b. 'Abdullah al-Ansari (Allah be pleased with them) reported that Allah's Messenger (may peace be upon him) entered Mecca and Qutaiba (another narrator) stated that he entered Mecca in the Year of Victory, wearing a black turban, but not wearing the Ihram.