There shall be kept on deposit available cash not exceeding 10% of the total assets of the retirement system. All funds of the retirement system shall be held for the sole purpose of meeting disbursements for pensions and other payments authorized by the provisions of this chapter, and shall be used for no other purpose. The description of the various funds of the retirement system shall be interpreted to refer to the accounting records of the retirement system, and not to the segregation of monies in the various funds of the retirement system.
(‘83 Code, § 36.56)