Numbers 18:16

And those being redeemed from the son of a month, shalt thou redeem according to thy estimation, the silver of five shekels according to the holy shekel, it is twenty gerahs.

Exodus 30:13

This they shall give, all passing by upon their reviewing, from half the shekel by the holy shekel; (twenty gerahs the shekel:) from half a shekel an offering to Jehovah.

Numbers 3:47

And thou shalt take five shekels by the heads, according to the holy shekel thou shalt take: twenty gerahs the shekel.

Leviticus 27:2-7

Speak to the sons of Israel, and say to them, When a man shall separate a vow by thy estimation, the souls for Jehovah.

Leviticus 27:25

And all thy estimation shall be according to the holy shekel: twenty gerahs shall be the shekel.

Ezekiel 45:12

And the shekel twenty gerahs: twenty shekels, five and twenty shekels, fifteen shekels the maneh shall be to you.

Treasury of Scripture Knowledge

Summary

And those that are to be redeemed from a month old shalt thou redeem, according to thine estimation, for the money of five shekels, after the shekel of the sanctuary, which is twenty gerahs.

General references

Bible References

According

Numbers 3:47
And thou shalt take five shekels by the heads, according to the holy shekel thou shalt take: twenty gerahs the shekel.
Leviticus 27:2
Speak to the sons of Israel, and say to them, When a man shall separate a vow by thy estimation, the souls for Jehovah.

Which is

Exodus 30:13
This they shall give, all passing by upon their reviewing, from half the shekel by the holy shekel; (twenty gerahs the shekel:) from half a shekel an offering to Jehovah.
Leviticus 27:25
And all thy estimation shall be according to the holy shekel: twenty gerahs shall be the shekel.
Ezekiel 45:12
And the shekel twenty gerahs: twenty shekels, five and twenty shekels, fifteen shekels the maneh shall be to you.

General references

Numbers 3:15
Review the sons of Levi according to the house of their fathers, according to their families: every male from the son of a month and above shalt thou review them.