Leviticus 27:9-13 - Redemption Of Vowed Animals
9 And if cattle which they shall make an offering from them to Jehovah, all which he shall give from it to Jehovah shall be holy. 10 He shall not change it, and he shall not exchange it, good for evil, or evil for good: and if changing, he shall change cattle for cattle, and the beast, it and its exchange shall be holy.
11 And if any unclean cattle which they. shall not bring near from it an offering to Jehovah, and he made the quadruped to stand before the priest 12 And the priest estimated it between good and between evil: according to thy valuation, O priest, so shall it be. 13 And if redeeming, he shall redeem it, and he shall add its fifth upon thy estimation.