Numbers 18:16
And those that are to be redeemed from a month old shall you redeem, according to yours estimation, for the money of five shekels, after the shekel of the sanctuary, which is twenty gerahs.
And those that are to be redeemed from a month old shall you redeem, according to yours estimation, for the money of five shekels, after the shekel of the sanctuary, which is twenty gerahs.