The above Rule provides for setting aside ex-parte decisions on sufficient cause for non-attendance of a duly summoned party. Such application for setting aside an ex-parte decision or award shall be made within thirty days from the date of such decision or award or within thirty days from the date of knowledge of such decision or award. Such application or petition could be filed by a party, duly summoned, fails to attend. But in the instant case, petition under Rule 31(4)(b) of the Rules was filed to set aside the award by the party, who had raised the dispute and in whose favour the award was passed. If the party who raised the dispute, feels aggrieved by such award, it is open for him to file appeal against such award or decision. The above said provision provides for filing petition by a party duly summoned, fails to attend, against whom ex-parte award is passed. In the instant case, the