Numbers 3:47-49

New Revised Standard Version, Anglicised

⁴⁷ you shall accept five shekels apiece, reckoning by the shekel of the sanctuary, a shekel of twenty gerahs. ⁴⁸ Give to Aaron and his sons the money by which the excess number of them is redeemed. ⁴⁹ So Moses took the redemption money from those who were over and above those redeemed by the Levites;