93. (1) An appeal shall lie to the Supreme Court from any judgment, decree or final order of a High Court of a Province, if the High Court certifies that the case involves a substantial question of law as to the interpretation of this Constitution and it shall be the duty of every such High Court to consider in every case whether or not any such question is involved and of its own motion to give or to withhold a certificate accordingly.

(2) Where such a certificate is given. any party in the case may appeal to the Supreme Court on the ground that any such question as aforesaid has been wrongly decided and, with the leave of the Supreme Court, on any other ground as well.