Leviticus 10:12-13

Then Moses saide vnto Aaron and vnto Eleazar and to Ithamar his sonnes that were left, Take the meate offring that remaineth of the offrings of the Lord, made by fire, and eate it without leauen beside ye altar: for it is most holy:

And ye shall eate it in the holy place, because it is thy duetie and thy sonnes duety of the offringes of the Lord made by fire: for so I am commanded.