Leviticus 17:14-16

17:14 for the life of all flesh is its blood. So I have said to the Israelites: You must not eat the blood of any living thing because the life of every living thing is its blood – all who eat it will be cut off.

Regulations for Eating Carcasses

17:15 “‘Any person who eats an animal that has died of natural causes or an animal torn by beasts, whether a native citizen or a foreigner, must wash his clothes, bathe in water, and be unclean until evening; then he becomes clean. 17:16 But if he does not wash his clothes and does not bathe his body, he will bear his punishment for iniquity.’”