Exodus 30:13–15

13 Each one who is numbered in the census shall give this: half a shekel2 according to the wshekel of the sanctuary (the xshekel is twenty gerahs),3 yhalf a shekel as an offering to the Lord. 14 Everyone who is numbered in the census, from twenty years old and upward, shall give the Lord’s offering. 15 The rich shall not give more, and the poor shall not give less, than ythe half shekel, when you give the Lord’s offering to make atonement for your lives.