Sec. 4-9. - Prohibited contracts and expenditures.

No office, department or agency shall expend any money or incur any liability or enter into any agreement which by its terms involves the expenditure of money during the fiscal year in excess of the amounts appropriated, other than for capital improvements to be financed in whole or in part by the issuance of bonds and the making of contracts and leases approved by the Council. Any contract, verbal or written, made in violation of this Charter shall be null and void.