Section 123A(2) in The Delhi Municipal Corporation Act, 1957
(2)(a)Every owner and every occupier as aforesaid shall be bound to comply with such notice and to furnish a return with a declaration that the statement made therein is correct to the best of knowledge and belief of such owner and occupier.(b)Whoever omits to comply with such requisition, shall in addition to any penalty to which he may be liable, be precluded from objecting to any assessment made by the Commissioner in respect of such land or building.