Leviticus 16:25

¹³You shall take all the fat that covers the innards, the cover of the liver, the two kidneys, and the fat that is on them, and burn them on the altar.

⁸He shall take all the fat of the bull of the sin offering from it: the fat that covers the innards, and all the fat that is on the innards, ⁹and the two kidneys, and the fat that is on them, which is by the loins, and the cover on the liver, with the kidneys, he shall remove, ¹⁰as it is removed from the bull of the sacrifice of peace offerings. The priest shall burn them on the altar of burnt offering.

⁶“Aaron shall offer the bull of the sin offering, which is for himself, and make atonement for himself and for his house.

¹⁹All its fat he shall take from it, and burn it on the altar.