Leviticus 27:9-11

New Catholic Bible

⁹ “If he brings an animal as an offering to the Lord, then everything that he has given to the Lord will be holy. ¹⁰ He should not exchange it, a good one for a bad one or a bad one for a good one. If he should substitute one animal for another, then both the original and the substitution become holy. ¹¹ If it is an unclean animal, one that a person cannot offer to the Lord, then he will bring the animal before the priest