Leviticus 27:13 KJV
But if he will at all redeem it, then he shall add a fifth part thereof unto thy estimation.
Leviticus 27:13, King James Version
In context
12 And the priest shall value it, whether it be good or bad: as thou valuest it, who art the priest, so shall it be.
13 But if he will at all redeem it, then he shall add a fifth part thereof unto thy estimation.
14 And when a man shall sanctify his house to be holy unto the Lord, then the priest shall estimate it, whether it be good or bad: as the priest shall estimate it, so shall it stand.