Leviticus 27:11-13

Amplified Bible

¹¹ If it is any unclean animal of the kind which men do not present as an offering to the Lord, then he shall bring the animal before the priest, ¹² and the priest shall value it as either good or bad; it shall be as you, the priest, value it. ¹³ But if he ever wishes to redeem it, then he shall add one-fifth of it to your valuation.