مِشْكَاةُ الْمَصَابِيحِ
Mishkat al-Masabih 4107
Game and Animals Which May Be Slaughtered
Lawful and Unlawful Food - Section 1
وَعَنْ جَابِرٍ أَنَّ رَسُولَ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ نَهَى يَوْمَ خَيْبَرَ عَنْ لُحُومِ الْحُمُرِ الْأَهْلِيَّةِ وَأَذِنَ فِي لُحُومِ الْخَيْلِ
Jabir said that on the day of Khaibar God’s messenger forbade the flesh of domestic asses, but permitted horseflesh. (Bukhari and Muslim.)
Mishkat al-Masabih, 4107مُتَّفق عَلَيْهِ (الألباني)