Leviticus 2:11
No meat offering, which you shall bring to the LORD, shall be made with leaven: for you shall burn no leaven, nor any honey, in any offering of the LORD made by fire.
Torrey's Topical Textbook—AKJV

Leviticus 10:12
And Moses spoke to Aaron, and to Eleazar and to Ithamar, his sons that were left, Take the meat offering that remains of the offerings of the LORD made by fire, and eat it without leaven beside the altar: for it is most holy:
Torrey's Topical Textbook—AKJV