law: The Foreign Marriage Act, 1969 
  4.Conditions relating to solemnization of foreign
  
  countries. - 
  A marriage between the parties one of whom at least is a citizen
  
  of India may be solemnized under this Act by or before a Marriage Officer in a
  
  Foreign country, if, at the time of the marriage, the following conditions are
  
  fulfilled, namely :---
  (a) neither party has a spouse living,
  (b) neither party is an idiot or a lunatic,
  (c) the bridegroom has completed the age of twenty-one years and
  
  be bride the age of eighteen years at the time of the marriage, and
  (d) the parties are not within the degree of prohibited of
  
  relationship :
  Provided  that where the personal law or a custom
  
  governing at least one of the parties permits of a marriage between them, such
  
  marriage may be solemnized, notwithstanding that they are within the degrees of
  
  prohibited relationship.