Leviticus 7:3-6

³They shall offer thereof the rump and the fat that covereth the entrails:

⁴The two little kidneys, and the fat which is by the flanks, and the caul of the liver with the little kidneys.

⁵And the priest shall burn them upon the altar: it is the burnt sacrifice of the Lord for a trespass.

⁶Every male of the priestly race, shall eat this flesh in a holy place, because it is most holy.