Cross reference
Leviticus 22:14
14 And if a man eat of the holy thing unwittingly, then he shall put the fifth part thereof unto it, and shall give unto the priest the holy thing.
Leviticus 27:13
13 But if he will indeed redeem it, then he shall add the fifth part thereof unto thy estimation.
Leviticus 27:15
15 And if he that sanctified it will redeem his house, then he shall add the fifth part of the money of thy estimation unto it, and it shall be his.
Leviticus 5:15-19
15 If any one commit a trespass, and sin unwittingly, in the holy things of Jehovah; then he shall bring his trespass-offering unto Jehovah, a ram without blemish out of the flock, according to thy estimation in silver by shekels, after the shekel of the sanctuary, for a trespass-offering:
16 and he shall make restitution for that which he hath done amiss in the holy thing, and shall add the fifth part thereto, and give it unto the priest; and the priest shall make atonement for him with the ram of the trespass-offering, and he shall be forgiven.
17 And if any one sin, and do any of the things which Jehovah hath commanded not to be done; though he knew it not, yet is he guilty, and shall bear his iniquity.
18 And he shall bring a ram without blemish out of the flock, according to thy estimation, for a trespass-offering, unto the priest; and the priest shall make atonement for him concerning the thing wherein he erred unwittingly and knew it not, and he shall be forgiven.
19 It is a trespass-offering: he is certainly guilty before Jehovah.