Explanation:

The Indian Parliament has enacted the law (The President (Discharge of Functions) Act, 1969) for the discharge of the functions of the President when vacancies occur in the offices of the President and of the Vice-President simultaneously, owing to removal, death, resignation of the incumbent or otherwise. In such an eventuality, the Chief Justice, or in his absence, the senior most Judge of the Supreme Court of India available discharges the functions of the President until a newly elected President enters upon his office or a newly elected Vice-President begins to act as President under Article 65 of the Constitution, whichever is the earlier.Mohammad Hidayatullah OBE was the 11th Chief Justice of India serving from 25 February 1968 to 16 December 1970, and the sixth Vice President of India, serving from 31 August 1979 to 30 August 1984.