Leviticus 27:9-10

KJV(i) 9 And if it be a beast, whereof men bring an offering unto the LORD, all that any man giveth of such unto the LORD shall be holy. 10 He shall not alter it, nor change it, a good for a bad, or a bad for a good: and if he shall at all change beast for beast, then it and the exchange thereof shall be holy.