וְאִם־גָּאֹ֤ל יִגְאַל֙ אֶת־הַשָּׂדֶ֔ה הַמַּקְדִּ֖ישׁ אֹת֑וֹ וְ֠יָסַף חֲמִשִׁ֧ית כֶּֽסֶף־עֶרְכְּךָ֛ עָלָ֖יו וְקָ֥ם לֽוֹ׃
And if he that sanctified the field will indeed redeem it, then he shall add the fifth part of the money of thy valuation unto it, and it shall be assured to him.
Read halakhic rulings (Jewish law) on Leviticus 27:19: and classical halakhic sources.