1 Samuel 2:15-16

15Sometimes the servant would come even before the animal’s fat had been burned on the altar. He would demand raw meat before it had been boiled so that it could be used for roasting.

16The man offering the sacrifice might reply, “Take as much as you want, but the fat must be burned first.” Then the servant would demand, “No, give it to me now, or I’ll take it by force.”