Leviticus 27:18-20 Young's Literal Translation (YLT)
18 and if after the jubilee he sanctify his field, then hath the priest reckoned to him the money according to the years which are left, unto the year of the jubilee, and it hath been abated from thy valuation.
19 `And if he really redeem the field -- he who is sanctifying it -- then he hath added a fifth of the money of thy valuation to it, and it hath been established to him;
20 and if he do not redeem the field, or if he hath sold the field to another man, it is not redeemed any more;
Leviticus 27:18-20 New International Version (NIV)
18 But if they dedicate a field after the Jubilee, the priest will determine the value according to the number of years that remain until the next Year of Jubilee, and its set value will be reduced. 19 If the one who dedicates the field wishes to redeem it, they must add a fifth to its value, and the field will again become theirs. 20 If, however, they do not redeem the field, or if they have sold it to someone else, it can never be redeemed.