 He took part in battles against Khwaja Usman and Pratapaditya during the viceroyalty of Islam Khan, but during the later period he was engaged in the warfare in Kamarupa.When the prince Shahjahan revolted against his father Jahangir and came to Bengal, Mirza Nathan joined him and helped in his war operations, but when the prince left Bengal for the Deccan, Mirza Nathan went into hiding and was not heard of anymore.Believed to be living a retired life, he adopted the pseudonym of "Ghaibi" ("Invisible").