Sahih al-Bukhari 1569
صحيح البخاري#1569SahihNarrated Sa`id 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 (ﷺ) did?" When `Ali saw that, he assumed Ihram for both Hajj and `Umra
Scholarly Authentication
We show the most cautious grade (weakest-wins) as the overall label. Individual scholars graded it as follows:
Every narration in Sahih al-Bukhari is accepted as Sahih (authentic) by the established status of the book.
In-book reference: 25:55