1 Samuel 2:13-14

13And the priests’ custom with the people was that when any man offered a sacrifice, the priest’s servant would come with a three-pronged fleshhook in his hand while the meat was boiling.

14Then he would thrust it into the pan, or kettle, or caldron, or pot; and the priest would take for himself all that the fleshhook brought up. So they did in Shiloh to all the Israelites who came there.