The second proviso enacts : "Provided further that where any law makes any provision for the acquisition by the State of any estate and where any land comprised therein is held by a person under his personal cultivation, it shall not be lawful for the State to acquire any portion of such land as is within the ceiling limit applicable to him under any law for the time being in force or any building or structure standing thereon or appurtenant thereto, unless the law relating to the acquisition of such land, building or structure, provides for payment of compensation at a rate which ,hall not be less than the market value thereof." By the Constitution (Seventeenth Amendment) Act, 1964, it was clearly enacted that under any law which provides for the acquisition of any land in an estate under the personal cultivation of the holder, compensation shall not be less than the market value of the land if such land be within the ceiling limit applicable to the holder under any law for the time being in force.