Leviticus 3:2-5

2Place your hand on the animal’s head. Then slaughter it at the entrance to the tent of meeting. Then Aaron’s sons, the priests, will throw the blood against the altar on all sides.

3From your offering remove the fat that covers the internal organs

4and the two kidneys with the fat on them and offer them by fire to the Lord. Also cut off the lobe of the liver along with the kidneys.

5Then Aaron’s sons will lay them on top of the burnt offering on the burning wood. It is an offering by fire, a soothing aroma to the Lord.