Leviticus 7:22

“And the Lord spake unto Moses, etc.] Continued speaking to him: saying; as follows.”

“Ye shall eat no manner of fat--(See on Lev 3:17).”

“7:22-27 In the sacrificial system, the fat and blood of all altar offerings belonged to God. They were offered before any of the sacrifice could be eaten. Consuming blood was specifically forbidden because it represented the very life of the animal (17:10-16). The injunction against eating fat might have been because fat, considered to be the best part of the offering, belonged to God.”

“On the other hand, "the soul which eats flesh of the peace-offering, and his uncleanness is upon him (for "whilst uncleanness is upon him;" the suffix is to be understood as referring to נפשׁ construed as a masculine, see Lev 2:1), "shall be cut off" (see Gen 17:14). This was to be done, whether the uncleanness arose from contact with an unclean object (any unclean thing), or from the uncleanness of man (cf. ch. 12-15), or from an unclean beast (see at Lev 11:4-8), or from any other unclean abomination. שׁקץ, abomination, includes the unclean fishes, birds, and smaller animals, to which this expression is applied in Lev 11:10-42 (cf. Eze 8:10 and Isa 66:17). Moreover contact with animals…”