Leviticus 7:22-25

22The Lord spoke to Moses:

23“Tell the Israelites: You are not to eat any fat of an ox, a sheep, or a goat.

24The fat of an animal that dies naturally or is mauled by wild beasts may be used for any other purpose, but you must not eat it.

25If anyone eats animal fat from a food offering presented to the Lord, the person who eats it is to be cut off from his people.