Leviticus 11:23-25

²³But all winged creeping things, which have four feet, are an abomination unto you.

²⁴And by these ye shall become unclean: whosoever toucheth the carcass of them shall be unclean until the even;

²⁵and whosoever beareth aught of the carcass of them shall wash his clothes, and be unclean until the even.