In the evening of the day of the conquest of Khaibar, the army made fires (for cooking). The Prophet ﷺ said, "For what have you made these fires?" They said, "For cooking the meat of domestic donkeys." He said, "Throw away what is in the cooking pots and break the pots." A man from the people got up and said, "Shall we throw the contents of the cooking pots and then wash the pots (instead of breaking them)?" The Prophet ﷺ said, "Yes, you can do either.'
لَمَّا أَمْسَوْا يَوْمَ فَتَحُوا خَيْبَرَ أَوْقَدُوا النِّيرَانَ قَالَ النَّبِيُّ ﷺ عَلَى مَا أَوْقَدْتُمْ هَذِهِ النِّيرَانَ قَالُوا لُحُومِ الْحُمُرِ الإِنْسِيَّةِ قَالَ أَهْرِيقُوا مَا فِيهَا وَاكْسِرُوا قُدُورَهَا فَقَامَ رَجُلٌ مِنَ الْقَوْمِ فَقَالَ نُهَرِيقُ مَا فِيهَا وَنَغْسِلُهَا فَقَالَ النَّبِيُّ ﷺ أَوْ ذَاكَ