Leviticus 27:6
For a boy from one month to five years old, give two ounces of silver and for a girl give about one ounce.
Numbers 3:40-43
Jehovah said to Moses: Register every firstborn male of the Israelites who is at least one month old, and make a list of their names.
Numbers 18:14-16
Anything in Israel that is claimed by Jehovah is yours.
Treasury of Scripture Knowledge
Summary
And if it be from a month old even unto five years old, then thy estimation shall be of the male five shekels of silver, and for the female thy estimation shall be three shekels of silver.
Bible References
From
Numbers 3:40
Jehovah said to Moses: Register every firstborn male of the Israelites who is at least one month old, and make a list of their names.
Numbers 18:14
Anything in Israel that is claimed by Jehovah is yours.