Sahih al-Bukhari 4218
صحيح البخاري#4218Sahihحَدَّثَنِي إِسْحَاقُ بْنُ نَصْرٍ، حَدَّثَنَا مُحَمَّدُ بْنُ عُبَيْدٍ، حَدَّثَنَا عُبَيْدُ اللَّهِ، عَنْ نَافِعٍ، وَسَالِمٍ، عَنِ ابْنِ عُمَرَ ـ رضى الله عنهما ـ قَالَ نَهَى النَّبِيُّ صلى الله عليه وسلم عَنْ أَكْلِ لُحُومِ الْحُمُرِ الأَهْلِيَّةِ.
Narrated Ibn `Umar:Allah's Messenger (ﷺ) forbade the eating of donkey-meat
Scholarly Authentication
The label above is the grade most of these scholars gave — one dissenting opinion no longer speaks for all of them. If any scholar calls a narration fabricated, that verdict is shown instead, whatever the others say. Each scholar's own wording:
Every narration in Sahih al-Bukhari is accepted as Sahih (authentic) by the established status of the book.
In-book reference: 64:258