Leviticus 27:1-6

Now the LORD spoke to Moses, saying, “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, if 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. If it is a female, then your valuation shall be thirty shekels; and 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; and 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