"Ali said to Ibn'Abbas, may Allah be please with them both: The Prophet forbade Mut'ah marriage, and the flesh of domesticated donkeys on the Day of Khaibar."' (Using translation from Nasāʾī 4334)
قَالَ عَلِيٌّ لِابْنِ عَبَّاسٍ إِنَّ النَّبِيَّ ﷺ «نَهَى عَنْ نِكَاحِ الْمُتْعَةِ وَعَنْ لُحُومِ الْحُمُرِ الْأَهْلِيَّةِ يَوْمَ خَيْبَرَ»