Use of land and building in contravention of master plan

Notwithstanding anything contained in any other law for the time being in force and subject to the provisions of section 9, no person shall, after the coming into operation of the master plan under sub-section (2) of section 8 use or permit to be used any land or building in the development area otherwise than in conformity with such master plan: Provided that it shall be lawful to continue to use upon such terms and conditions as may be prescribed, any land or building for the purpose and to the extent for which it is being used on the date on which such master plan comes into operation.