Leviticus 27:8-10

Young's Literal Translation

⁸ `And if he is poorer than thy valuation, then he hath presented himself before the priest, and the priest hath valued him; according to that which the hand of him who is vowing doth reach doth the priest value him.

⁹ `And if [it is] a beast of which they bring near an offering to Jehovah, all that [one] giveth of it to Jehovah is holy;

¹⁰ he doth not change it nor exchange it, a good for a bad, or a bad for a good; and if he really change beast for beast, -- then it hath been -- it and its exchange is holy.