Leviticus 7:10-12

10But any grain offering, whether dry or mixed with oil, belongs equally to all of Aaron’s sons.

11“Now this is the law of the fellowship sacrifice that someone may present to the Lord:

12If he presents it for thanksgiving, in addition to the thanksgiving sacrifice, he is to present unleavened cakes mixed with olive oil, unleavened wafers coated with oil, and well-kneaded cakes of fine flour mixed with oil.