Challenge in the petition is to the order dated February 18, 2010 passed by learned Court below whereby the application filed by the petitioner/plaintiff for getting the thumb impressions of Shubgeh Singh son of Nazar Singh alias Major Singh compared on the affidavit dated January 9, 2004 with his thumb impressions on the sale deeds dated June 27, 2000 and September 20, 2000 and power of attorney October 25, 1999. It is not in dispute that the petitioner/plaintiff has already completed his evidence and even the defendants have also led their evidence. The onus of the issues which is relevant for the purpose of affidavit of Shubgeh Singh is concerned was on the plaintiff in which he had led his evidence. Once the onus of the issue is on the plaintiff he cannot be permitted to lead evidence in rebuttal on that issue as opportunity to led evidence in rebuttal is permissible only on the issues, the onus of which is on the defendants.