Ubaid bin al-Hasan al-Mzny عبيد بن الحسن المزني · Foods (Kitab Al-At'imah)

On the day of Khaibar the Messenger of Allah(ﷺ) forbade us to eat the flesh of domestic asses, and ordered us to eat horse-flesh. ‘Amr said: I informed Abu al-Sha’tha’ about this tradition. He said: Al-Hakam al-Ghifari among us said this, and the” ocean” denied that, intending thereby Ibn’ Abbas.