The tenth part of an ephah — About six pints. He shall put no oil, neither frankincense — Either to distinguish these from the meal — offerings, Leviticus 2:1, or as a fit expression of their sorrow for their sins, in the sense whereof they were to abstain from things pleasant; or to signify that by his sins he deserved to be utterly deprived both of the oil of gladness, the gifts, graces and comforts of the Holy Ghost; and of God's gracious acceptance of his prayers and sacrifices, which is signified by incense, Psalms 141:2.
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.