رسالة د. كهلان الخروصي

… All these features can be found in other Muslim schools but their presence in the >th~r al-Rab‚` b. ™ab‚b antedates any evidence in other works of other madh~hib. This means that the legal notions of Ib~‡iyya were present at a very early stage. Thus any overview of the Ib~‡iyya that ignores this and simply concentrates on political and doctrinal principles is at the very least incomplete.