Numbers 18:9-10

This shall be thine of the most holy things, reserved from the fire: every oblation of theirs, even every meal-offering of theirs, and every sin-offering of theirs, and every trespass-offering of theirs, which they shall render unto me, shall be most holy for thee and for thy sons. As the most holy things shalt thou eat thereof; every male shall eat thereof: it shall be holy unto thee.