Leviticus 27:1

1 And the Yahuah spake unto Moses, saying,

2 Speak unto the children of Israel, and say unto them, When a man shall make a singular vow, the persons for the Yahuah by your estimation.

3 And your estimation shall be of the male from twenty years old even unto sixty years old, even your estimation shall be fifty shekels of silver, after the shekel of the sanctuary.