According to CPC no Court shall proceed with the trial

Solution

 If the matter in issue is directly and substantially in issue in a previously instituted suit between the same parties, Explanation: Section 10 CPC - Stay of suit—No Court shall proceed with the trial of any suit in which the matter in issue is also directly and substantially in issue in a previously instituted suit between the same parties, or between parties under whom they or any of them claim litigating under the same title where such suit is pending in the same or any other Court in India have jurisdiction to grant the relief claimed, or in any Court beyond the limits of India established or continued by the Central Government  and having like jurisdiction, or before the Supreme Court.