Sahih Muslim 5022
صحيح مسلم#5022SahihJabir b. 'Abdullah reported that Allah's Messenger (ﷺ) prohibited eating of the flesh of domestic asses on the Day of Khaibar, and permitted the cooking of the flesh of horses
Scholarly Authentication
We show the most cautious grade (weakest-wins) as the overall label. Individual scholars graded it as follows:
Every narration in Sahih Muslim is accepted as Sahih (authentic) by the established status of the book.
In-book reference: 34:51