Leviticus 3:3-5

New Revised Standard Version, Anglicised Catholic Edition

³ You shall offer from the sacrifice of well-being, as an offering by fire to the Lord, the fat that covers the entrails and all the fat that is around the entrails; ⁴ the two kidneys with the fat that is on them at the loins, and the appendage of the liver, which he shall remove with the kidneys. ⁵ Then Aaron’s sons shall turn these into smoke on the altar, with the burnt-offering that is on the wood on the fire, as an offering by fire of pleasing odour to the Lord.