Exodus 29:33

They are to eat these offerings by which atonement was made for their ordination and consecration. But no one else may eat them, because they are sacred.

(New International Version)

'Thus they shall eat those things by which atonement was made at their ordination and consecration; but a layman shall not eat them, because they are holy.

(New American Standard Bible)

And they shall eat those things wherewith the atonement was made, to consecrate and to sanctify them: but a stranger shall not eat thereof, because they are holy.

(King James Version)