Leviticus 11:21-25

21Yet you may eat from all winged creeping things that go on all fours, which have legs above their feet, with which to hop on the earth.

22You may eat from any kind of locust, any kind of katydid, any kind of cricket and any kind of grasshopper.

23But all winged creeping things that have four feet are loathsome to you.

24“Moreover, by these also you will become unclean: whoever touches their carcasses should be unclean until the evening.

25Whoever carries any part of their carcass is to wash his clothes, and will be unclean until the evening.