Leviticus 2:2-3

²And he shall bring it to the priests the sons of Aaron: and having taken from it a handful of the fine flour with the oil, and all its frankincense, then the priest shall put the memorial of it on the altar: it is a sacrifice, an odour of sweet savor to the Lord.

³And the remainder of the sacrifice shall be for Aaron and his sons, a most holy portion from the sacrifices of the Lord.