Leviticus 27:33-34

Evangelical Heritage Version

³³ The donor must not sort out the good from the bad, and he must not make any substitutions for it. If he makes a substitution for it, then both the first animal and its substitute shall be set apart as holy. It cannot be redeemed.

³⁴ These are the commandments that the Lord commanded Moses for the people of Israel at Mount Sinai.