Sahih Bukhari
Sahih Bukhari Volume 002, Book 026, Hadith Number 640.
Hadith Section/Book: Sahih Bukhari Sahih Bukhari Book 26. Pilgrimmage (Hajj)
Narated By Said bin Al-Musaiyab : 'Ali and 'Uthman differed regarding Hajj-at-Tamattu' while they were at 'Usfan (a familiar place near Mecca). 'Ali said, "I see you want to forbid people to do a thing that the Prophet did?" When 'Ali saw that, he assumed Ihram for both Hajj and 'Umra.