Leviticus 11:24, 28, 31, 39

“And by these you shall become unclean. Whoever touches their carcass shall be unclean until the evening

and he who carries their carcass shall wash his clothes and be unclean until the evening; they are unclean to you.

These are unclean to you among all that swarm. Whoever touches them when they are dead shall be unclean until the evening.

“And if any animal which you may eat dies, whoever touches its carcass shall be unclean until the evening