Levítico 5:11

11 "'If, however, they cannot afford two doves or two young pigeons, they are to bring as an offering for their sin a tenth of an ephah That is, probably about 3 1/2 pounds or about 1.6 kilograms of the finest flour for a sin offering. They must not put olive oil or incense on it, because it is a sin offering.

11 But if he has not enough money for two doves or two young pigeons, then let him give, for the sin he has done, the tenth part of an ephah of the best meal, for a sin-offering; let him put no oil on it, and no perfume, for it is a sin-offering.