Leviticus 11:24-28, 39-40

“The following creatures will make you ceremonially unclean. If any of you touch their carcasses, you will be defiled until evening. If you pick up their carcasses, you must wash your clothes, and you will remain defiled until evening. “Any animal that has split hooves that are not evenly divided or that does not chew the cud is unclean for you. If you touch the carcass of such an animal, you will be defiled. Of the animals that walk on all fours, those that have paws are unclean. If you touch the carcass of such an animal, you will be defiled until evening. If you pick up its carcass, you must wash your clothes, and you will remain defiled until evening. These animals are unclean for you.

“If an animal you are permitted to eat dies and you touch its carcass, you will be defiled until evening. If you eat any of its meat or carry away its carcass, you must wash your clothes, and you will remain defiled until evening.