Section 123(2) in Tamil Nadu Town and Country Planning Act, 1971
(2)Every rule made under this Act shall, as soon as possible after it is made, be placed on the table of the Legislative Assembly, and if, before the expiry of the session in which it is so placed or the next session, the assembly makes any modification in any such rule, or the assembly decides that the rule should not be made, the rule shall thereafter have effect only in such modified form or be of no effect, as the case may be, so however, that any such modification or annulment shall be without prejudice to the validity of anything previously done under that rules.