Leviticus 7:23-32

23‘Tell Israel's people this. They must not eat the fat from sheep, cows or goats.

24A person can use the fat of a dead animal that he has found, but he must not eat it.

25They must not eat the fat of an animal that they have burnt as a gift on the Lord's altar. They must send away from God's people anyone who does eat it.

26You must not eat the blood of an animal or of a bird even if you are living in another country.

27You must send away from Israel's people any person who eats blood.’

28The Lord said to Moses,

29‘Say to Israel's people, “When a person gives an animal as a friendship offering, he must bring part of it to the Lord.

30He must carry the offering in his own hands to the fire. He must bring the fat and the meat of the ribs and he must lift the meat to the Lord.

31The priest will burn the fat at the altar. He will lift the meat of the ribs to God. Then Aaron's sons can eat it.

32The top part of the back right leg of the animal is a gift.