Sahih al-Bukhari 4222
صحيح البخاري#4222SahihNarrated Al-Bara and `Abdullah bin Abi `Aufa:That when they were in the company of the Prophet, they got some donkeys which they (slaughtered and) cooked. Then the announcer of the Prophet (ﷺ) said, "Turn the cooking pots upside down (i.e. throw out the meat)
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: 64:261