Leviticus 22:14
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
But if he will indeed redeem it, then he shall add the fifth part thereof unto thy estimation.
Leviticus 27:15
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
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: