Leviticus 7:23

Speak unto the children of Israel, saying
Putting them in mind, by repeating to them the laws concerning fat and blood, ( Leviticus 3:17 )

ye shall eat no manner of fat;
of any creature fit for food, whose flesh otherwise may be eaten, and particularly

of ox, or of sheep, or of goats:
creatures used in sacrifice; though this is not to be restrained to such of them, and the fat of them that were sacrificed, whose fat was claimed by the Lord as his, and was burnt on his altar; but this is to be understood of the fat of these creatures when killed for their common use, for the food of them and their families; the fat even of these was not to be eaten; that which was not separated from the flesh, but mixed with it, might be eaten, but not that which was separated ^F12.