Sahih al-Bukhari 4216
صحيح البخاري#4216SahihNarrated `Ali bin Abi Talib:On the day of Khaibar, Allah's Messenger (ﷺ) forbade the Mut'a (i.e. temporary marriage) and the eating of donkey-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: 64:256