Sahih Muslim Book - 34, Hadith - 5011

وحَدَّثَنَا أَبُو كَامِلٍ فُضَيْلُ بْنُ حُسَيْنٍ ، حَدَّثَنَا عَبْدُ الْوَاحِدِ ، يَعْنِي ابْنَ زِيَادٍ ، حَدَّثَنَا سُلَيْمَانُ الشَّيْبَانِيُّ ، قَالَ : سَمِعْتُ عَبْدَ اللهِ بْنَ أَبِي أَوْفَى ، يَقُولُ : أَصَابَتْنَا مَجَاعَةٌ لَيَالِيَ خَيْبَرَ ، فَلَمَّا كَانَ يَوْمُ خَيْبَرَ وَقَعْنَا فِي الْحُمُرِ الأَهْلِيَّةِ ، فَانْتَحَرْنَاهَا ، فَلَمَّا غَلَتْ بِهَا الْقُدُورُ ، نَادَى مُنَادِي رَسُولِ اللهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ أَنِ اكْفَؤُوا الْقُدُورَ ، وَلاَ تَأْكُلُوا مِنْ لُحُومِ الْحُمُرِ شَيْئًا ، قَالَ : فَقَالَ نَاسٌ : إِنَّمَا نَهَى عَنْهَا رَسُولُ اللهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ لأَنَّهَا لَمْ تُخَمَّسْ ، وَقَالَ آخَرُونَ : نَهَى عَنْهَا الْبَتَّةَ.

Sulaiman Ash-Shaibani said: "I heard 'Abdullah bin Abi Awfa say: 'On the Day of Khaibar we fell upon some domesticated donkeys and slaughtered them. When the cooking pots were boiling, the caller of the Messenger of Allah (s.a.w) cried out (saying): "Overturn the cooking pots and do not eat any of the donkey meat." Some people said: "The Messenger of Allah (s.a.w) has only forbidden it because it has not been distributed as it should have been (i.e., with the Khumus being taken out before the booty was divided)," and others said: "He has forbidden it forever."