All claims against the City of Cushing shall be itemized, verified
under oath and filed with the city clerk, and approved by the board
of commissioners before being paid, and all bills and claims shall
be paid by warrant drawn on the city treasurer, which shall be signed
by the chairman of the board of commissioners and attested by the
city clerk, and any claims which are not filed within six (6) months
from the date of becoming due, shall be outlawed, and shall not be
of any force and effect.