Leviticus 7:21-25

When anyone touches anything unclean, whether human uncleanness, or an unclean animal, or any unclean detestable thing, and eats of the flesh of the sacrifice of peace offerings which belong to the Lord, that person shall be cut off from his people.’ ”

Then the Lord spoke to Moses, saying,

“Speak to the sons of Israel, saying, ‘You shall not eat any fat from an ox, a sheep, or a goat.

Also the fat of an animal which dies and the fat of an animal torn by animals may be put to any other use, but you certainly are not to eat it.

For whoever eats the fat of the animal from which an offering by fire is offered to the Lord, the person who eats it shall also be cut off from his people.