Leviticus 7:23 "You shall eat no fat of an ox, or sheep, or goat"

There are certain parts of a kosher animal which we are not allowed to eat.

This Negative Mitzvah concerns the "chelev" or "hard fat" of the animal.

We are forbidden to eat the chelev. The chelev was part of the sacrifices that were offered in the Beit HaMikdash.