law: Registration Act, 1908
  26. Documents executed out of India
  When a document purporting to have been executed by all or any
  
  of the parties out of 18[India] is not presented for registration till after
  
  the expiration of the time hereinbefore prescribed in that behalf, the
  
  registering officer, if satisfied-
  (a) that the instrument was so executed, and
  (b) that it has been presented for registration within four
  
  months after its arrival in 18[India]
  may, on payment of the proper registration-fee, accept such
  
  document for registration.