“I said: ‘O Messenger
of
Allah, I have come to you to ask you about the vermin of the earth.
What do you say about mastigures?’ He said: ‘I do not eat them
and I
do not forbid them.’ I said: ‘I will eat of that which you
have not
forbidden. But why (do you not eat them), O Messenger of
Allah?’ He
said: ‘One of the nations was turned into beasts and I
looked at this
creature and was uncertain.’ I said: ‘O Messenger
of Allah, what do
you say about rabbits?’ He said: ‘I do not eat
them and I do not
forbid them.’ I said: ‘I will eat of that which
you have not
forbidden. But why (do you not eat them), O Messenger of
Allah?’ He
said: ‘I have been told that it menstruates.’”
Sunan Ibn Majah Book 28, Hadith 46