Leviticus 7:29

‘Now if his offering is a sacrifice of peace offerings, if he is going to bring near one from the herd, whether male or female, he shall bring it near without blemish before Yahweh.

‘Then Aaron’s sons shall offer it up in smoke on the altar on the burnt offering, which is on the wood that is on the fire; it is an offering by fire of a soothing aroma to Yahweh.

‘And the priest shall take the ram’s shoulder when it has been boiled, and one unleavened cake out of the basket and one unleavened wafer, and shall put them on the hands of the Nazirite after he has shaved the hair of his Nazirite vow.

Then Yahweh spoke to Aaron, “Now behold, I Myself have given you the responsibility of My contributions, even all the holy gifts of the sons of Israel I have given them to you as a portion and to your sons as a perpetual statute.

And this was the legal judgment for the priests with the people: when any man was offering a sacrifice, the priest’s young man would come while the meat was boiling, with a three-pronged fork in his hand.