The Book of Hunting, Slaughter, and what may be Eaten
وَحَدَّثَنَا أَبُو كُرَيْبٍ، وَإِسْحَاقُ بْنُ إِبْرَاهِيمَ، قَالَ أَبُو كُرَيْبٍ حَدَّثَنَا ابْنُ بِشْرٍ، عَنْ مِسْعَرٍ، عَنْ ثَابِتِ بْنِ عُبَيْدٍ، قَالَ سَمِعْتُ الْبَرَاءَ، يَقُولُ نُهِينَا عَنْ لُحُومِ الْحُمُرِ الأَهْلِيَّةِ، .Bara was heard saying:We were forbidden (to eat) the flesh of the domestic asses
From Sahih Muslim, whose reports the scholars accept as authentic.