Numbers 3:49-51

And Moses took the redemption money of them that were over and above them that were redeemed by the Levites: Of the firstborn of the children of Israel took he the money; a thousand three hundred and threescore and five {shekels}, after the shekel of the sanctuary: And Moses gave the money of them that were redeemed unto Aaron and to his sons, according to the word of the LORD, as the LORD commanded Moses.