Numbers 18:10

‘Every male among the sons of Aaron may eat it; it is a perpetual statute throughout your generations, from the offerings by fire to Yahweh. Whoever touches them will be set apart as holy.’”

Then he said to me, “The north chambers and the south chambers, which are opposite the separate area, they are the holy chambers where the priests who are near to Yahweh shall eat the most holy things. There they shall lay the most holy things, the grain offering, the sin offering, and the guilt offering; for the place is holy.

Do you not know that those who perform sacred services eat the food of the temple, and those who attend regularly to the altar have their share from the altar?