Vayikra 5:18

18 And he shall bring a ram tamim out of the flock, with thy estimation, for an asham (trespass offering) unto the kohen; and the kohen shall make kapporah for him concerning his ignorance wherein he erred and knew it not and it shall be forgiven him.

Vayikra 5:18 Meaning and Commentary

Leviticus 5:18

And he shall bring a ram without blemish out of the flock,
&c.] (See Gill on Leviticus 5:15)

with thy estimation for a trespass [offering] to the priest;
along with the offering was to be brought an estimate of whatsoever damage had been done through the breach of any of the commands of God, where damage could take place, that so recompense be made as before directed; or else the ram brought was to be valued, and examined whether it was worth two shekels of silver, as before explained, (See Gill on Leviticus 5:15) but no fifth was required as in the former cases:

and the priest shall make atonement for him concerning his
ignorance wherein he erred, and wist [it] not, and it shall be
forgiven him; (See Gill on Leviticus 5:10) this is what the Jews call "Asham Talui", doubtful trespass offering.

Vayikra 5:18 In-Context

16 And he shall make restitution in regard to the holy thing in which he was remiss, and shall add the fifth part thereto, and give it unto the kohen; and the kohen shall make kapporah for him with the ram of the asham (trespass offering), and it shall be forgiven him.

17 And if a nefesh sin, and commit any of these things which are forbidden to be done by the mitzvot Hashem; though he know it not, yet he is guilty, and shall bear his avon (iniquity).

18 And he shall bring a ram tamim out of the flock, with thy estimation, for an asham (trespass offering) unto the kohen; and the kohen shall make kapporah for him concerning his ignorance wherein he erred and knew it not and it shall be forgiven him.

19 It is an asham (trespass offering); he hath certainly trespassed against Hashem. [See Isa 53:10 on Moshiach’s asham offering for Israel—Isa 53:8].