Leviticus

And the remnant of the meat offering shall be Aaron’s and his sons’: it is a thing most holy of the offerings of the Lord made by fire.

Speak unto Aaron and to his sons, saying, This is the law of the sin offering: In the place where the burnt offering is killed shall the sin offering be killed before the Lord: it is most holy.

This shall be thine of the most holy things, reserved from the fire: every oblation of theirs, every meat 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.

In the most holy place shalt thou eat it; every male shall eat it: it shall be holy unto thee.

No meat offering, which ye shall bring unto the Lord, shall be made with leaven: for ye shall burn no leaven, nor any honey, in any offering of the Lord made by fire.