5 U.S. Code § 5501
5.U.S. Code § 5501 is about Disposition of money accruing from lapsed salaries or unused appropriations for salaries. It is under Part 3 (Employees) Subpart D (Pay and Allowances) Subchapter 1 (General Provisions) Chapter 55 (Pay Administration) of Title 5 (Government Organizations and Employees) of the Code.
Money accruing from lapsed salaries or from unused appropriations for salaries shall be covered into the Treasury of the United States. An individual who violates this section shall be removed from the service.
