(2) Orders and other instruments made and executed in the name of the President shall be authenticated
in such manner as may be specified in rules2
to be made by the President, and the validity of an order or instrument which is so authenticated shall not be called in question on the ground that it is not an order or
instrument made or executed by the President.
(3) The President shall make rules for the more convenient transaction of the business of the
Government of India, and for the allocation among Ministers of the said business.