Whenever the Constitution requires the 'satisfaction' of the President for the exercise of any power or function by him, it means

In the context of the question, the satisfaction of the President refers to his satisfaction in a constitutional sense, which means that it is the satisfaction of his council of ministers. The President acts on the advice of the council of ministers in most matters, including the giving of assent to bills. Therefore, when a provision requires the President's satisfaction, it means that the council of ministers must be satisfied with the provision before it is presented to the President for his assent.

Importance of the council of ministers: The council of ministers plays a crucial role in the functioning of the President's office. They are responsible for advising the President on various matters, including the giving of assent to bills. The Constitution vests the executive power of the Union in the President, but this power is to be exercised on the aid and advice of the council of ministers. Therefore, the satisfaction of the President is essentially the satisfaction of his council of ministers.