Leviticus 11:24, 43, 44

“ ‘You will make yourselves unclean by these; whoever touches their carcasses will be unclean till evening.

Do not defile yourselves by any of these creatures. Do not make yourselves unclean by means of them or be made unclean by them.

I am the LORD your God; consecrate yourselves and be holy, because I am holy. Do not make yourselves unclean by any creature that moves along the ground.