Numbers 18:8-10

8And Yhwh spake unto Aaron, Behold, I also have given thee the charge of mine heave offerings of all the hallowed things of the children of Israel; unto thee have I given them by reason of the anointing, and to thy sons, by an ordinance for ever. 9This shall be thine of the most holy things, reserved from the fire: every oblation of theirs, every grain 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. 10In the most holy place shalt thou eat it; every male shall eat it: it shall be holy unto thee.