Notwithstanding anything
contained in article 13, no law giving effect to the policy of the State towards securing [all or any of the
principles laid down in Part IV] shall be deemed to be void on the ground that it is inconsistent with, or
takes away or abridges any of the rights conferred by
[article 14 or article 19];
[and no law containing a declaration that it is for giving effect to such policy shall be called in question in any court on the ground
that it does not give effect to such policy]:
Provided that where such law is made by the Legislature of a State, the provisions of this article shall
not apply thereto unless such law, having been reserved for the consideration of the President, has received
his assent.]