Leviticus 2:1

‘But if his means are insufficient for two turtledoves or two young pigeons, then for his offering for that which he has sinned, he shall bring the tenth of an ephah of fine flour for a sin offering; he shall not place oil on it or put frankincense on it, for it is a sin offering.

Next he brought near the grain offering and filled his hand with some of it and offered it up in smoke on the altar, besides the burnt offering of the morning.

“Then let them take a bull from the herd with its grain offering, fine flour mixed with oil; and a second bull from the herd you shall take for a sin offering.

“This shall be yours from the most holy gifts reserved from the fire; every offering of theirs, even every grain offering and every sin offering and every guilt offering, which they shall render to Me, shall be most holy for you and for your sons.

also a tenth of an ephah of fine flour for a grain offering, mixed with a fourth of a hin of beaten oil.

and their grain offering and their drink offerings for the bulls, for the rams and for the lambs, by their number according to the legal judgment;

“You have not brought to Me the sheep of your burnt offerings, Nor have you glorified Me with your sacrifices. I have not burdened you with offerings, Nor wearied you with frankincense.

The Statutes of Grain Offerings