Leviticus 5:11-13

11But if his hand cannot attain to two turtle-doves, or two young pigeons, then he that sinned shall bring for his offering the tenth part of an ephah of fine flour for a sin-offering: he shall put no oil on it, neither shall he put 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, the memorial thereof, and burn it on the altar, with Jehovah's offerings by fire: it is a sin-offering.

13And the priest shall make atonement for him concerning his sin which he hath sinned in one of these, and it shall be forgiven him; and it shall be the priest's, as the oblation.