Lev 7:23-25

23Speak to the people of Israel, saying: You shall eat no fat of ox or sheep or goat.24The fat of an animal that died or was torn by wild animals may be put to any use, but you must not eat it.25If any one of you eats the fat from an animal of which an offering by fire may be made to the Lord, you who eat it shall be cut off from your kin.