Narrated by:Jabir said
It was narrated that Jabir said:"On the Day of Khaibar we ate the flesh of horses, and onagers, but the Prophet forbade us (from eating) donkeys."(sahih)
أَخْبَرَنَا قُتَيْبَةُ، قَالَ حَدَّثَنَا الْمُفَضَّلُ، - هُوَ ابْنُ فَضَالَةَ - عَنِ ابْنِ جُرَيْجٍ، عَنْ أَبِي الزُّبَيْرِ، عَنْ جَابِرٍ، قَالَ أَكَلْنَا يَوْمَ خَيْبَرَ لُحُومَ الْخَيْلِ وَالْوَحْشِ وَنَهَانَا النَّبِيُّ صلى الله عليه وسلم عَنِ الْحِمَارِ .
Nesai
The Book of Hunting and Slaughtering • Hadith 4343