Exodus 30:11-13

Young's Literal Translation

¹¹ And Jehovah speaketh unto Moses, saying,

¹² `When thou takest up the sum of the sons of Israel for their numbers, then they have given each an atonement [for] his soul to Jehovah in their being numbered, and there is no plague among them in their being numbered.

¹³ `This they do give, every one passing over unto those numbered, half a shekel, by the shekel of the sanctuary (the shekel [is] twenty gerahs); half a shekel [is] the heave-offering to Jehovah;