This is a permanent statute for the generations to come, wherever you live: You must not eat any fat or any blood.”
Directions are here given concerning the peace-offering, if it was a sheep or a goat. Turtle-doves or young pigeons, which might be brought for whole burnt offerings, were not allowed for peace-offerings, because they have no fat considerable enough to be burnt upon the altar; and they would be next to nothing if they were to be divided according to the law of the peace-offerings.
Commenting on Leviticus 3:6-17
ye eat neither fat nor blood--The details given above distinctly define the fat in animals which was not to be eaten, so that all the rest, whatever adhered to other parts, or was intermixed with them, might be used. The prohibition of blood rested on a different foundation, being intended to preserve their reverence for the Messiah, who was to shed His blood as an...
[It shall be] a perpetual statute for your generations throughout all your dwellings, that ye eat neither fat nor blood. (f) Eating fat was a symbol of carnality, and eating blood signified cruelty.