law: Constitution of India, 1949 
     8. Rights of citizenship of certain persons of
  
  India origin residing outside India.- 
  Notwithstanding anything in Article 5, any person
  
  who or either of whose parents or any of whose grand-parents was born in India
  
  as defined in the Government of India Act, 1935 (as originally enacted), and
  
  who is ordinarily residing in any country outside India as so defined shall be
  
  deemed to be a citizen of India if he has been registered as a citizen of India
  
  by the diplomatic or consular representative of India in the country where he
  
  is for the time being residing on an application made by him therefore to such
  
  diplomatic or consular representative, whether before or after the commencement
  
  of this Constitution, in the form and manner prescribed by the Government of
  
  the Dominion of India or the Government of India.