Leviticus 3:1, 16-17

“If his offering is a sacrifice of peace offering, if he offers an animal from the herd, male or female, he shall offer it without blemish before the LORD.

And the priest shall burn them on the altar as a food offering with a pleasing aroma. All fat is the LORD’s. It shall be a statute forever throughout your generations, in all your dwelling places, that you eat neither fat nor blood.”