AH al-Raza Proclaimed Heir-apparent With a view to establish a coalition between the houses of Abbas and Ali and to put an end to the Alia rebellion in the West and as Ma’mun considered the Aiids the rightful claimants of the Khilafat
S M Iniamudum. V 147
Abdullah Al-Ma’mun 553 he called Ali Ibn Musa Raza the eight Imam of the Shi’ah and twenty two years senior to him, to Merv. Ma’mun gave him his daughter in marriage and proclaimed him as his heir to the throne in Shawwal
202/March 817. Thus an edict was issued and the black flag and dress of the Abbasids were changed into the green of the Alids. This shows Ma’mun’s weakness and his inclination to the House of Ali as well as his love of power for the sake of which he sacrificed the interest of his dynasty.2
