Leviticus 7:27

The fat of that which dies of itself, and the fat of that which is torn of animals, may be used for any other service, but you shall in no way eat of it.

For whoever eats the fat of the animal which men offer as an offering made by fire to the LORD, even the soul who eats it shall be cut off from his people.

You shall not eat any blood, whether it is of bird or of animal, in any of your dwellings.

The LORD spoke to Moses, saying,

“Speak to the children of Israel, saying, ‘He who offers the sacrifice of his peace offerings to the LORD shall bring his offering to the LORD out of the sacrifice of his peace offerings.

With his own hands he shall bring the offerings of the LORD made by fire. He shall bring the fat with the breast, that the breast may be waved for a wave offering before the LORD.