A single Justice of the Supreme Court may exercise power vested in the Supreme Court not involving the decision of a cause or matter before the Supreme Court, except that -

(a) in criminal matters, where that Justice refuses or grants an application in the exercise of any such power, a person affected by it is entitled to have the application determined by the Supreme Court constituted by three Justices of the Supreme Court; and

(b) in civil matters, any order, direction or decision made or given under this article may be varied, discharged or reversed by the Supreme Court, constituted by three Justices of the Supreme Court.