Ancient scriptures prophesied that when the Messiah would appear his spiritual kingdom would pass onto his son and grandson. It was the birth of the eldest son of Hazrat Mirza Bashir-ud-Din Mahmud Ahmad^(ra) - Hazrat Mirza Nasir Ahmad - and his election as the third Khalifah of the Ahmadiyya Muslim Community that saw the fulfilment of this prophecy. Hazrat Mirza Nasir Ahmad