Leviticus 5:10-12 World English Bible (WEB)
10 He shall offer the second for a burnt offering, according to the ordinance; and the priest shall make atonement for him concerning his sin which he has sinned, and he shall be forgiven.
11 “‘But if he can’t afford two turtledoves or two young pigeons, then he shall bring as his offering for that in which he has sinned, one tenth of an ephah[a] of fine flour for a sin offering. He shall put no oil on it, and he shall not put any frankincense on it, for it is a sin offering. 12 He shall bring it to the priest, and the priest shall take his handful of it as the memorial portion, and burn it on the altar, on the offerings of Yahweh made by fire. It is a sin offering.