Numbers 18:8-10

8Then the Lord spoke to Aaron, “Now behold, I Myself have given you charge of My 12offerings, 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 allotment.

9This shall be yours from the most holy gifts reserved from the fire; every offering of theirs, even 3every grain offering and every 4sin offering and every guilt offering, which they shall render to Me, shall be most holy for you and for your sons.

10As the most holy gifts you shall eat it; every male shall eat it. It shall be holy to you.