Someone came to Allah's Messenger (ﷺ) and said, "The donkeys have been (slaughtered and) eaten. Another
man came and said, "The donkeys have been destroyed." On that the Prophet (ﷺ) ordered a caller to
announce to the people: Allah and His Apostle forbid you to eat the meat of donkeys, for it is impure.'
Thus the pots were turned upside down while the (donkeys') meat was boiling in them.
Sahih al-Bukhari Book 72, Hadith 53