“We went out with the
Messenger of Allah (ﷺ) on the campaign of Khaibar, and in the
evening the people lit their fires. The Prophet (ﷺ) said: ‘What
are
you cooking?’ They said: ‘The meat of domesticated donkeys.’
He said:
‘Throw out what is in them (the pots) and break them.’ A
man said: ‘Or
can we throw out what is in them and wash them?’
The Prophet (ﷺ)
said: ‘Or (do) that.’”
Sunan Ibn Majah Book 27, Hadith 34