Exodus 30:13
This they shall give, every one that passes among them that are numbered, half a shekel after the shekel of the sanctuary: (a shekel is twenty gerahs:) an half shekel shall be the offering of the LORD.
Nave's Topical Index—AKJV

Nehemiah 10:32
Also we made ordinances for us, to charge ourselves yearly with the third part of a shekel for the service of the house of our God;
Nave's Topical Index—AKJV