Leviticus 27:2-7
2 “Speak to the Israelites and say to them: ‘If anyone makes a special vow to dedicate persons to the Lord by giving equivalent values,
3 set the value of a male between the ages of twenty and sixty at fifty shekels of silver, according to the sanctuary shekel;
4 and if it is a female, set her value at thirty shekels.
5 If it is a person between the ages of five and twenty, set the value of a male at twenty shekels and of a female at ten shekels.
6 If it is a person between one month and five years, set the value of a male at five shekels of silver and that of a female at three shekels of silver.
7 If it is a person sixty years old or more, set the value of a male at fifteen shekels and of a female at ten shekels.