Al-Kāfi - Volume 6 > Comprehensive Chapter on Animals that are not Edible
Hadith #10

عَلِيُّ بْنُ إِبْرَاهِيمَ عَنْ أَبِيهِ عَنِ ابْنِ أَبِي عُمَيْرٍ عَنْ عُمَرَ بْنِ أُذَيْنَةَ عَنْ مُحَمَّدِ بْنِ مُسْلِمٍ وَ زُرَارَةَ عَنْ أَبِي جَعْفَرٍ ( عليه السلام ) أَنَّهُمَا سَأَلَاهُ عَنْ أَكْلِ لُحُومِ الْحُمُرِ الْأَهْلِيَّةِ قَالَ نَهَى رَسُولُ اللَّهِ ( صلى الله عليه وآله ) عَنْهَا وَ عَنْ أَكْلِهَا يَوْمَ خَيْبَرَ وَ إِنَّمَا نَهَى عَنْ أَكْلِهَا فِي ذَلِكَ الْوَقْتِ لِأَنَّهَا كَانَتْ حَمُولَةَ النَّاسِ وَ إِنَّمَا الْحَرَامُ مَا حَرَّمَ اللَّهُ عَزَّ وَ جَلَّ فِي الْقُرْآنِ .

10. Ali ibn Ibrahim has narrated from his father from ibn abu ‘Umayr from ‘Umar ibn ‘Udhaynah from Muhammad ibn Muslim and Zurarah who have said the following: “We once asked abu Ja’far, ‘Alayhi al-Salam, about using domestic donkeys for food. He (the Imam) said, ’The Messenger of Allah, O Allah, grant compensation to Muhammad and his family worthy of their services to Your cause, prohibited it on the day of Khaybar. He (the Messenger of Allah) did so on that day because people used it for transportation. Unlawful is what Allah, most Majestic, most Glorious, has made unlawful in the Quran.’”