ORISSA MINING CORPORATION LTD. vs PRANNATH VISHWANATH RAWLLEY

The Supreme Court held that an arbitrator's jurisdiction is limited to the claims specified in the order of reference, as per Section 20 of the Arbitration Act. The Court found that the arbitrator exceeded his authority by considering additional claims not included in the original reference. Consequently, the High Court's decision to uphold the arbitrator's award was set aside, reinforcing the principle that arbitrators cannot entertain fresh claims without a further court order.