Leviticus 7:2-4

Amplified Bible

² In the place where they kill the burnt offering they are to kill the guilt offering, and he shall sprinkle its blood around on the altar. ³ Then he shall offer all its fat, the fat tail and the fat that covers the entrails, ⁴ and the two kidneys with the fat that is on them at the loins, and the lobe of the liver, which he shall remove with the kidneys.