Leviticus 5:11

5:11 “‘If he cannot afford two turtledoves or two young pigeons, he must bring as his offering for his sin which he has committed a tenth of an ephah of choice wheat flour for a sin offering. He must not place olive oil on it and he must not put frankincense on it, because it is a sin offering.

Leviticus 6:15

6:15 and the priest must take up with his hand some of the choice wheat flour of the grain offering and some of its olive oil, and all of the frankincense that is on the grain offering, and he must offer its memorial portion up in smoke on the altar as a soothing aroma to the Lord.