Sahih al-Bukhari 4217
Book 64: Military Expeditions led by the Prophet (pbuh) (Al-Maghaazi) · Narrated by Ibn `Umar
Arabic
حَدَّثَنَا مُحَمَّدُ بْنُ مُقَاتِلٍ، أَخْبَرَنَا عَبْدُ اللَّهِ، حَدَّثَنَا عُبَيْدُ اللَّهِ بْنُ عُمَرَ، عَنْ نَافِعٍ، عَنِ ابْنِ عُمَرَ، أَنَّ رَسُولَ اللَّهِ صلى الله عليه وسلم نَهَى يَوْمَ خَيْبَرَ عَنْ لُحُومِ الْحُمُرِ الأَهْلِيَّةِ.
English translation
Narrated Ibn `Umar:On the day of Khaibar, Allah's Messenger (ﷺ) forbade the eating of donkey meat
Reference: Sahih al-Bukhari 4217, Book of Military Expeditions led by the Prophet (pbuh) (Al-Maghaazi). English translation by Dr. Muhammad Muhsin Khan.