Leviticus 27:9

And if it be a beast, &c.— A record kind of things vowed to God, are beasts; which being of two sorts, clean and unclean, it is provided, first, with respect to clean beasts, that every individual of this sort vowed to God, should be applied according to the direct intention of the vow: it was to be, and to be treated as holy. And, secondly, with respect to unclean beasts, when such were devoted, they were to be valued by the priests; and then the owner had liberty either to leave them to the priests' disposal, or to redeem them, by paying the rate set upon them, with a fifth part more, Leviticus 27:13. The case was the same with regard to houses and fields, the other kinds of things devoted and spoken of in the subsequent verses; see Leviticus 27:15; Leviticus 27:19.