Leviticus 7:4

And the two kidneys, and the fat that is on them, which is by the flanks, and the caul that is above the liver, with the kidneys, it shall he take away:

Cross-references

Leviticus 7:23 prohibits eating any fat from these animals — the same fat designated here for offering is forbidden to eat.

Leviticus 3:4 repeats the exact same list of kidneys, fat, and caul for the peace offering — identical language.