Vayikra 27:10-12

Orthodox Jewish Bible

¹⁰ He shall not exchange it, nor substitute it, a tov for a rah, or rah for tov: and if he shall at all substitute behemah for behemah, then it and the substitute thereof shall be kodesh.

¹¹ And if it be any behemah temeiah, of which they do not offer a korban unto Hashem, then he shall present the behemah before the kohen;

¹² And the kohen shall value it, whether it be tov or rah; as thou valuest it, who art the kohen, so shall it be.