“93. Before moving on to other aspects, we may summarise our conclusions on the jurisdictional powers of these Tribunals. The Tribunals are competent to hear matters where the vires of statutory provisions are questioned. However, in discharging this duty, they cannot act as substitutes for the High Courts and the Supreme Court which have, under our constitutional setup, been specifically entrusted with such an obligation. Their function in this respect is only supplementary and all such decisions of the Tribunals will be subject to scrutiny before a Division Bench of the respective High Courts. The Tribunals will consequently also have the power to test the vires of subordinate legislations and rules. However, this power of the Tribunals will be subject to one important exception. The Tribunals shall not entertain any question regarding the vires of their parent statutes following the settled principle that a Tribunal which is a creature of an Act cannot declare that very Act to be unconstitutional. In such cases alone, the concerned High Court may be approached directly. All