Exodus 30:13
13 Each one who is numbered in the census shall give this: half a shekel1 according to the shekel of the sanctuary (the shekel is twenty gerahs),2 half a shekel as an offering to the Lord.
Exodus 38:26
26 a beka1 a head (that is, half a shekel, by the shekel of the sanctuary), for everyone who was nlisted in the records, from twenty years old and upward, for o603,550 men.