Section 146(4) in Greater Hyderabad Municipal Corporation Act, 1955
(4)No contract for the acquisition of any immovable property or of any interest therein or any right thereto or the payment of any compensation under sub-section (1), (2) or (3) shall be valid, if the price or compensation to be paid for such property or interest or right exceeds rupees five thousand unless and until such contract has been approved by the Corporation.