Sahih al-Bukhari 208
صحيح البخاري#208SahihNarrated Ja`far bin `Amr bin Umaiya:My father said, "I saw Allah's Messenger (ﷺ) taking a piece of (cooked) mutton from the shoulder region and then he was called for prayer. He put his knife down 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: 4:74