Leviticus 22:14
If a person eats anything sacred inadvertently, he is to add a fifth part to it and then give the sacred thing to the priest.
Leviticus 27:13
If a kinsman redeemer decides to redeem it, then he is to add a fifth to your valuation."
Leviticus 27:15
And if he that consecrated it wishes to redeem his house, he is to add one fifth to your valuation, after which it is to belong to him.
Leviticus 5:15-19
"When a person commits a truly treacherous act and sins inadvertently concerning the sacred things of the LORD, then he is to bring a trespass offering to the LORD from the flock as compensation for his guilt. It is to be a ram without defect, estimated as to its value in silver shekels, according to the sanctuary shekel.