Leviticus 6:17

6:17 It must not be baked with yeast. I have given it as their portion from my gifts. It is most holy, like the sin offering and the guilt offering.

Leviticus 6:25

6:25 “Tell Aaron and his sons, ‘This is the law of the sin offering. In the place where the burnt offering is slaughtered the sin offering must be slaughtered before the Lord. It is most holy.