Exodus 30
15 Ref The man of wealth is to give no more and the poor man no less than the half-shekel of silver, when the offering is made to the Lord as the price for your lives.
16 Ref And you are to take this money from the children of Israel to be used for the work of the Tent of meeting, to keep the memory of the children of Israel before the Lord and to be the price of your lives.