Union Government
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.
The Prime Minister has a specific constitutional duty to keep the President informed - communicating all Cabinet decisions, providing any information the President asks for, and, if the President requests it, bringing a Minister's individual decision before the full Council of Ministers for collective consideration. This gives the President a genuine, if limited, channel to stay informed and occasionally seek reconsideration of decisions, balancing the largely ceremonial role described in Article 74.
If the President has concerns about a decision made by an individual Minister without full Cabinet discussion, Article 78(c) lets the President ask the Prime Minister to bring that matter before the entire Council of Ministers for proper collective consideration.