Leviticus 27:2-13

2“Speak to the children of Israel, and say to them: ‘When a man consecrates by a vow certain persons to the Lord, according to your valuation,

3if your valuation is of a male from twenty years old up to sixty years old, then your valuation shall be fifty shekels of silver, according to the shekel of the sanctuary.

4If it is a female, then your valuation shall be thirty shekels;

5and if from five years old up to twenty years old, then your valuation for a male shall be twenty shekels, and for a female ten shekels;

6and if from a month old up to five years old, then your valuation for a male shall be five shekels of silver, and for a female your valuation shall be three shekels of silver;

7and if from sixty years old and above, if it is a male, then your valuation shall be fifteen shekels, and for a female ten shekels.

8‘But if he is too poor to pay your valuation, then he shall present himself before the priest, and the priest shall set a value for him; according to the ability of him who vowed, the priest shall value him.

9‘If it is an animal that men may bring as an offering to the Lord, all that anyone gives to the Lord shall be holy.

10He shall not substitute it or exchange it, good for bad or bad for good; and if he at all exchanges animal for animal, then both it and the one exchanged for it shall be holy.

11If it is an unclean animal which they do not offer as a sacrifice to the Lord, then he shall present the animal before the priest;

12and the priest shall set a value for it, whether it is good or bad; as you, the priest, value it, so it shall be.

13But if he wants at all to redeem it, then he must add one-fifth to your valuation.