Where the said decision or order involves an issue on which 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 High Court or the Supreme Court against such decision of the Appellate Tribunal or as the case may be, the High Court is pending, the time period spent between the date of the decision of the Appellate Tribunal and the date of the decision of the High Court or as the case may be, 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 3 years, where notice for revision has been issued.
Where the issuance of an order under sub-section (1) is stayed by the order of a Court or Tribunal, the period of such stay shall be excluded in computing the period referred to in clause (b) of sub-section (2).
(ICAI FAQ PUBLICATIONS 06-09-2017 Revisional Powers of Chief Commissioner or Commissioner: FAQ NO. 20)