Leviticus 7:3-5

Darby Translation

³ And he shall present of it all the fat thereof; the fat tail and the fat that covereth the inwards,

⁴ and 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.

⁵ And the priest shall burn them on the altar, an offering by fire to Jehovah: it is a trespass-offering.