text:  Scarcely had he entered upon office when not contented with exercising sovereign authority like his father and brother under an appearance of delegation from the Khalif he persuaded or compelled the feeble Hisham who had no male issue to appoint him _Wali-al-ahd _ or heir-presumptive--the deed of nomination is given at length by Al-Makkari and is a curious specimen of a state-paper