law: Parsi Marriage and Divorce Act, I936 
  40. Permanent alimony and maintenance
  (1) Any Court
  
  exercising jurisdiction under this Act may, at the time of passing any decree
  
  or at any time subsequent thereto, on an application made to it for the purpose
  
  by either the wife or the husband, order that the defendant shall pay to the
  
  plaintiff for her or his maintenance and support, such gross sum or such
  
  monthly or periodical sum, for a term not exceeding the life of the plaintiff
  
  as having regard to the defendant's own income and other property, if any, the
  
  income and other property of the plaintiff, the conduct of the parties and
  
  other circumstances of the case, it may seem to the Court to be just, and any
  
  such payment may be secured, if necessary, by a charge on the movable or
  
  immovable property of the defendant.
  (2) The Court if it is
  
  satisfied that there is change in the circumstances of either party at any time
  
  after it has made an order under sub-section (1), it may, at the instance of
  
  either party, vary, modify or rescind any such order in such manner as the
  
  Court may deem just.
  (3) The Court if it is
  
  satisfied that the partly in whose favor, an order has been made under this
  
  section has remarried or, if such party is the wife, that she has not remained
  
  chaste, or, if such party is the husband, that he had sexual intercourse with
  
  any woman outside wedlock, it may, at the instance of the other party, vary,
  
  modify or rescind any such order in such manner as the Court may deem just.]