Leviticus 3
2 Ref And he shall lay his hand upon the head of his oblation, and kill it at the door of the tent of meeting: and Aaron's sons the priests shall sprinkle the blood upon the altar round about.
3 Ref And he shall offer of the sacrifice of peace-offerings an offering made by fire unto Jehovah; the fat that covereth the inwards, and all the fat that is upon the inwards,
4 Ref and the two kidneys, and the fat that is on them, which is by the loins, and the caul upon the liver, with the kidneys, shall he take away.
5 Ref And Aaron's sons shall burn it on the altar upon the burnt-offering, which is upon the wood that is on the fire: it is an offering made by fire, of a sweet savor unto Jehovah.