On the day of Khaybar we slaughtered horses, mules, and assess. The Messenger of Allah (ﷺ) forbade us (to eat) mules and asses, but he did not forbid horse-flesh.
Sunan Abi Dawud Book 28, Hadith 54
← Previous Hadith The Messenger of Allah(ﷺ) forbade the flesh of domestic asses on the day of Khaibar, but permitted horse flesh.

Sunan Abi Dawud Book 28, Hadith 53 Next Hadith → The Messenger of Allah (ﷺ) forbade us to eat horse-flesh, the flesh of mules and of asses. The narrator Haywah added: Every beast of prey with a fang.

Abu Dawud said: This view is held by Malik.

Abu Dawud said: There is no harm in (eating) horse-flesh and this tradition is not practised.

Abu Dawud said: This tradition has been abrogated. A body of Companions of the Prophet (ﷺ) had eaten horse-flesh. OF them are: Ibn al-Zubair, Fudalah bin 'Ubaid, Anas bin Malik, Asma' daughter of Abu Bakr, Suwaid bin Ghaflah, 'Alqamah; the Quraish used to slaughter them (horses) during the time of the Messenger of Allah (ﷺ).

Sunan Abi Dawud Book 28, Hadith 55