Numbers 5:12

5:12 “Speak to the Israelites and tell them, ‘If any man’s wife goes astray and behaves unfaithfully toward him,

Numbers 5:15

5:15 then the man must bring his wife to the priest, and he must bring the offering required for her, one tenth of an ephah of barley meal; he must not pour olive oil on it or put frankincense on it, because it is a grain offering of suspicion, a grain offering for remembering, for bringing iniquity to remembrance.