Leviticus 3:10-13

¹⁰and the two kidneys, and the fat that is on them, which is by the flanks, and the net above the liver which he shall take away as far as the kidneys;

¹¹and the priest shall burn it on the altar: it is the food of the offering by fire to Jehovah.

¹²And if his offering be a goat, then he shall present it before Jehovah.

¹³And he shall lay his hand on the head of it, and slaughter it before the tent of meeting; and the sons of Aaron shall sprinkle the blood thereof on the altar round about.