law: Indian Divorce Act, 1869 
  35. Power to order adulterer to pay costs 
  Whenever in any petition presented by a husband the alleged
  
  adulterer has been made a co-respondent, and the adultery has been established,
  
  the court may order the co-respondent to pay the whole or any part of the costs
  
  of the proceedings:
  PROVIDED  that the co-respondent shall not be ordered to
  
  pay the petitioner’s costs- 
  (1) if the respondent was, at the time of the adultery, living
  
  apart from her husband and leading the life of a prostitute, or
  (2) if the co-respondent had not, at the time of the adultery,
  
  reason to believe the respondent to be a married woman.
   Power to order litigious intervener to pay cost  s- Whenever any
  
  application is made under section 17, the court, if it thinks that the applicant
  
  had no grounds or no sufficient grounds for intervening, may order him to pay
  
  the whole or any part of the costs occasioned by the application.