least five years, or

b) He has been an Advocate of a High Court (or of two or more such Courts in succession) for at least ten years, or

c) The person is a distinguished jurist in the opinion of President.

It may be noted that the Constitution has not prescribed a minimum age for appointment as a judge of the Supreme Court, nor any fixed period of office. Further, a Judge of a High Court or a retired Judge of the Supreme Court or High Court may be appointed as an ad-hoc Judge of the Supreme Court.