Leviticus 7:23-25

23Speak unto the children of Israel, saying, No fat, of ox, or of sheep, or of goat shall ye eat.

24But the fat of a dead carcase, and the fat of that which is torn, may be used in any other use; but ye shall in no wise eat it.

25For whoever eateth the fat of the beast of which men present an offering by fire to Jehovah, the soul that hath eaten shall be cut off from his peoples.