18 But if he sanctify his field after the jubilee, then the priest shall reckon unto him the money according to the years that remain, even unto the year of the jubilee, and it shall be abated from thy estimation.
Leviticus 27:18 Cross References - KJV
Leviticus 25:15-16
15 According to the number of years after the jubilee thou shalt buy of thy neighbor, and according unto the number of years of the fruits he shall sell unto thee:
16 According to the multitude of years thou shalt increase the price thereof, and according to the fewness of years thou shalt diminish the price of it: for according to the number of the years of the fruits doth he sell unto thee.
Leviticus 25:27
27 Then let him count the years of the sale thereof, and restore the overplus unto the man to whom he sold it; that he may return unto his possession.
Leviticus 25:51-52
51 If there be yet many years behind, according unto them he shall give again the price of his redemption out of the money that he was bought for.
52 And if there remain but few years unto the year of jubilee, then he shall count with him, and according unto his years shall he give him again the price of his redemption.