Sahih al-Bukhari 207
صحيح البخاري#207SahihNarrated `Abdullah bin `Abbas:Allah's Messenger (ﷺ) ate a piece of cooked mutton from the shoulder region and prayed without repeating ablution
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: 4:73