"On the Day of khaiber we caught some donkeys outside the village and we cooked them. Then the caller of the Prophet called out: 'The Messenger of Allah has forbidden the flesh of donkeys, so turn over your cooking pots with whatever is in them.' So we turned them over." (Using translation from Nasāʾī 4339)
أَصَبْنَا يَوْمَ خَيْبَرَ حُمُرًا خَارِجًا مِنَ الْقَرْيَةِ فَاطَّبَخْنَاهَا فَأَتَانَا مُنَادِي رَسُولِ اللهِ ﷺ فَقَالَ إِنَّ رَسُولَ اللهِ ﷺ «قَدْ حَرَّمَ لُحُومَ الْحُمُرِ فَأَكْفِئُوا الْقُدُورَ بِمَا فِيهَا فَأَكْفيْنَاهَا»