1 Samuel 2:13-14

13or for their duties as priests. Whenever anyone offered a sacrifice, Eli’s sons would send over a servant with a three-pronged fork. While the meat of the sacrificed animal was still boiling,

14the servant would stick the fork into the pot and demand that whatever it brought up be given to Eli’s sons. All the Israelites who came to worship at Shiloh were treated this way.