Leviticus 22:13

“Thus they shall eat those things by which atonement was made to ordain them, to set them apart as holy; but a layman shall not eat them, because they are holy.

‘No layman, however, is to eat the holy gift; a foreign resident with the priest or a hired man shall not eat of the holy gift.

“This also is yours, the contribution from their gift, even all the wave offerings of the sons of Israel; I have given them to you and to your sons and daughters with you as a perpetual statute. Everyone of your household who is clean may eat it.