Numbers 3:47-49

New King James Version

⁴⁷ you shall take ^(A)five shekels for each one ^(B)individually; you shall take them in the currency of the shekel of the sanctuary, ^(C)the shekel of twenty gerahs. ⁴⁸ And you shall give the money, with which the excess number of them is redeemed, to Aaron and his sons.”

⁴⁹ So Moses took the redemption money from those who were over and above those who were redeemed by the Levites.