25. 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 application made to it for the
purpose by either the wife or the husband, as the case may be, order that the respondent shall 3* * * pay to
the applicant 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 applicant as, having regard to the respondent’s own income and
other property, if any, the income and other property of the applicant 4[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 immovable property of the respondent.
(2) If the court is satisfied that there is a 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) If the court is satisfied that the party in whose favour an order has been made under this section
has re-married or, if such party is the wife, that she has not remained chaste, or, if such party is the
husband, that he has had sexual intercourse with any woman outside wedlock, 5[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].