Leviticus 11:24-25, 39-40

“You will make yourselves ritually unclean until evening if you touch their carcasses. If you pick up one of their carcasses you must wash your clothes and you’ll be unclean until evening.

“If an animal that you are permitted to eat dies, anyone who touches the carcass is ritually unclean until evening. If you eat some of the carcass you must wash your clothes and you are unclean until evening. If you pick up the carcass you must wash your clothes and are unclean until evening.