(6)The Appellate Tribunal may, after considering the merits of the application made by the assessee, pass an order of stay in any proceedings relating to an appeal filed under section 362(1), for a period not exceeding one hundred and eighty days from the date of such order, subject to the condition that the assessee––(a)deposits not less than 20% of the amount of tax, interest, fee, penalty or any other sum payable under this Act; or(b)furnishes security of equal amount as referred to in clause (a), and the Appellate Tribunal shall dispose of the appeal within the said period of stay specified in that order.