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.