Numbers 5:14-15

14and if a feeling of jealousy comes over the husband and he becomes jealous because of his wife who has defiled herself — or if a feeling of jealousy comes over him and he becomes jealous of her though she has not defiled herself —

15then the man is to bring his wife to the priest. He is also to bring an offering for her of two quarts of barley flour. He is not to pour oil over it or put frankincense on it because it is a grain offering of jealousy, a grain offering for remembrance to draw attention to guilt.