Leviticus 25:51

If there are still many years, he shall refund part of his purchase price in proportion to them for his own redemption;

Treasury of Scripture Knowledge

Summary

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.

Bible References

General references

Leviticus 25:27
then he shall calculate the years since its sale and refund the balance to the man to whom he sold it, and so return to his property.
Leviticus 27:18
If he consecrates his field after the jubilee, however, then the priest shall calculate the price for him proportionate to the years that are left until the year of jubilee; and it shall be deducted from your valuation.
Luke 4:19
To proclaim the favorable year of the Lord.”