Leviticus 27:17-27

17 if from the year of the jubilee he sanctify his field, according to thy valuation it standeth;
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;
21 and the field hath been, in its going out in the jubilee, holy to Jehovah as a field which is devoted; to the priest is its possession.
22 `And if the field of his purchase (which [is] not of the fields of his possession) [one] sanctify to Jehovah --
23 then hath the priest reckoned to him the amount of thy valuation unto the year of jubilee, and he hath given thy valuation in that day -- a holy thing to Jehovah;
24 in the year of the jubilee the field returneth to him from whom he bought it, to him whose [is] the possession of the land.
25 And all thy valuation is by the shekel of the sanctuary: twenty gerahs is the shekel.
26 `Only, a firstling which is Jehovah's firstling among beasts -- no man doth sanctify it, whether ox or sheep; it [is] Jehovah's.
27 And if among the unclean beasts, then he hath ransomed [it] at thy valuation, and he hath added its fifth to it; and if it is not redeemed, then it hath been sold at thy valuation.

Leviticus 27:17-27 Meaning and Commentary

INTRODUCTION TO LEVEITICUS 27

This chapter contains various laws concerning vows made unto the Lord, whether of persons whose estimation was to be made by the priest, according to their age, sex, and condition, Le 26:1-8; or of beasts, clean and unclean, good or bad, Le 26:9-13; or of houses, fields, and lands, the estimation of which was to be according to its seed, and the time of its being set apart, whether from or after the year of jubilee, and the number of years to it, Le 26:14-25; with this exception to the above laws, that no firstling of the Lord's might be sanctified, and if an unclean beast it might be redeemed, but nothing devoted to the Lord, whether of man, beast, or field, might be sold or redeemed, Le 26:26-29; and the chapter is concluded with some laws concerning the redemption or change of tithes, what might or what might not be redeemed or changed, Le 26:30-34;

Young's Literal Translation is in the public domain.