(1) Notwithstanding anything contained in this Act, an issue on which the Appellate Authority or the Appellate Tribunal or the High Court has given its decision which is prejudicial to the interest of revenue in some other proceedings and an appeal to the Appellate Tribunal or the High Court or the Supreme Court against such decision of the Appellate Authority or the Appellate Tribunal or the High Court is pending, the period spent between the date of the decision of the Appellate Authority and that of the Appellate Tribunal or the date of decision of the Appellate Tribunal and that of the High Court or the date of the decision of the High Court and that of the Supreme Court shall be excluded in computing the period referred to in section 34 or section 35.

(2) Notwithstanding anything contained in this Act, if any decision or order under section 73 or section 75 involves an issue on which the Revision Authority or Appellate Authority or the High Court has given its decision which is prejudicial to the interest of revenue in some other proceedings and an appeal to the High Court or the Supreme Court against such decision of the Appellate Tribunal or the High Court is pending, the period spent between the date of the decision of the Appellate Tribunal and the date of the decision of the High Court or the date of the decision of the High Court and the date of the decision of the Supreme Court shall be excluded in computing the period of limitation referred to in section 73 or section 75.