Numbers 5:15; Numbers 28:5

Numbers 5:15

15 then he is to take his wife to the priest. He must also take an offering of a tenth of an ephah of barley flour on her behalf. He must not pour olive oil on it or put incense on it, because it is a grain offering for jealousy, a reminder-offering to draw attention to wrongdoing.

Numbers 28:5

5 together with a grain offering of a tenth of an ephah of the finest flour mixed with a quarter of a hin of oil from pressed olives.