Tenth part of an ephah of fine flour— That is, an omer. No oil or frankincense was to be put upon this gift, as these were appropriated to joyful occasions; and, consequently, unfit for offerings expressive of humiliation and grief; see Numbers 5:15. Note: Sin must be as unsavoury to the soul, as this offering was on the altar.
Related Commentaries of Leviticus 5:11
Leviticus 5:11
11 But if he be not able to bring two turtledoves, 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 upon it, neither shall he put any frankincense thereon: for it is a sin offering.