Constitution of India, 1949
It shall be the duty of the Prime Minister-
(a) to communicate to the President all decisions of the council of Ministers relating to the administration of the affairs of the union and proposals for legislation;
(b) to furnish such information relating to the administration of the affairs of the Union and proposals for legislation as the President may call for; and
(c) if the President so requires, to submit for the consideration of the Council of Ministers any matter on which a decision has been taken by a Minister but which has not been considered by the Council.