Khan's counsel had earlier made a plea for the re-examination of Mishra, a prosecution witness.
The hearing of the case, however, could not progress today as Mishra failed to appear in the court forre-examination by the defence.
The court adjourned the hearing for August 3.
"The prosecution witness Mishra did not appear in the court today, so the court adjourned the hearing," said Khan's counsel H M Saraswat.
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"In view of that, we have also moved a fresh application in the trail court for production of the documents pertaining to the prosecution permission," said Saraswat.
During the previous hearing on the application of the defence seeking re-examination of Mishra, Chief Judicial Magistrate Dalpat Singh Rajpurohit had summoned Mishra.
A case had been registered against Khan under the Arms Act for alleged possession and use of arms with expired licence during poaching of two black bucks at village Kankani near Jodhpur in October, 1998.