Leviticus 27:9-10

New International Version

⁹ “‘If what they vowed is an animal that is acceptable as an offering to the Lord,^(A) such an animal given to the Lord becomes holy.^{(B) 10} They must not exchange it or substitute a good one for a bad one, or a bad one for a good one;^(C) if they should substitute one animal for another, both it and the substitute become holy.