Leviticus 3:3-4

Expanded Bible

³ From the ·fellowship [or peace; well-being] offering he must make a sacrifice by fire to the Lord. He must offer the fat of the animal’s inner organs (both the fat that is in them and that covers them), ⁴ both kidneys with the fat that is on them near the ·lower back muscle [loins], and the ·best part [appendage] of the liver, which he will remove with the kidneys.