Sahih al-Bukhari 127
صحيح البخاري#127SahihNarrated Abu at-Tufail:The above mentioned Statement of `Ali
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: 3:69