Leviticus 3:4-9

4and 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. 5And 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.

6And if his oblation for a sacrifice of peace-offerings unto Jehovah be of the flock; male or female, he shall offer it without blemish. 7If he offer a lamb for his oblation, then shall he offer it before Jehovah; 8and he shall lay his hand upon the head of his oblation, and kill it before the tent of meeting: and Aaron’s sons shall sprinkle the blood thereof upon the altar round about. 9And he shall offer of the sacrifice of peace-offerings an offering made by fire unto Jehovah; the fat thereof, the fat tail entire, he shall take away hard by the backbone; and the fat that covereth the inwards, and all the fat that is upon the inwards,