And this was
the custom of the priests with the people: when
anyone was offering a sacrifice, the priest’s servant would come while the meat was cooking, with a three-pronged fork in his hand.
And he would thrust it into the pan, or kettle, or caldron, or pot; everything that the fork brought up, the priest would take for himself. They did so in Shiloh to all the Israelites who came there.
Also, before they burned the fat, the priest’s servant would come and say to the man who was sacrificing, 'Give the priest meat for roasting, as he will not take cooked meat from you, only raw.'
the man said to him, 'They must burn the fat first, then take as much as you desire,' then he would say, 'No, but you must give it to me
now; and if not, I am taking it by force!'