law: Citizenship Act, 1955 
  15. Revision 
  (1) Any person aggrieved by an order made under this Act by the
  
  prescribed authority or any officer or other authority (other than the Central
  
  Government) may, within a period of thirty days from the date of the order,
  
  make an application to the Central Government for revision of that order:
  PROVIDED  that the Central Government may entertain the
  
  application after the expiry of the said period of thirty days, if it is
  
  satisfied that the applicant was prevented by sufficient cause from making the
  
  application in time.
  (2) On receipt of any such application under sub-section (1),
  
  the Central Government shall, after considering the application of the
  
  aggrieved person and any report thereon which the officer or authority making
  
  the order may submit, make such order in relation to the application as it
  
  deems fit, and the decision of the Central Government shall be final.