law: Indian Divorce Act, 1869 
  51. Mode of taking evidence  
  The witnesses in all proceedings before the court, where their
  
  attendance can be had, shall be examined orally, and any party may offer
  
  himself or herself as a witness, and shall be examined, and may be
  
  cross-examined and re-examined, like any other witness:
  PROVIDED  that the parties shall be at liberty to verify
  
  their respective cases in whole or in part by affidavit, but so that the
  
  deponent in every such affidavit shall, on the application of the opposite
  
  party, or by direction of the court, be subject to be cross-examined by or on
  
  behalf of the opposite party orally, and after such cross-examination may be
  
  re-examined orally as aforesaid by or on behalf of the party by whom such
  
  affidavit was filed.