Leviticus 5:11-13

11But if his means suffice not for two turtledoves, or two young pigeons, then he shall bring his oblation for that wherein he hath sinned, the tenth part of an ephah of fine flour for a sin offering; he shall put no oil upon it, neither shall he put any frankincense thereon: for it is a sin offering.

12And he shall bring it to the priest, and the priest shall take his handful of it as the memorial thereof, and burn it on the altar, upon the offerings of the LORD made by fire: it is a sin offering.

13And the priest shall make atonement for him as touching his sin that he hath sinned in any of these things, and he shall be forgiven: and the remnant shall be the priest’s, as the meal offering.