The new vision to Ijtehad and its implications

This article discusses about Ijtehad, its relation to jurisdiction, the argument for obligation of Ijtehad, the position of object in Ijtehad, spatio-temporal effects in Ijtehad and the necessity of specialization in contemporary situation. My research has concluded that: 1. The neccecety of separation between Ijtehad in general meaning and Ijtehad in special meaning. 2. Jurisprudence includes Ijtehadic and Taghlidi understanding. 3. For proving the obligation of Ijtehad we must appeal to the argument such as: the argument of the obligation of protecting system of humanity and the argument of the obligation of protecting sharia'. 4. Ijtehad includes the knowing of the object the rulling. 5. The principle of Ijtehad are philology and Arabic litetature, the science of Rijal, the science of typology of traditions (Diraya'), knowing Quran and traditions, Usul Al-Fegh, logic, mathematics, astrology, theology, economics, politics, sociology, banking, history, philosophy (in Ijtehad in general meaning). 6. Because of the variety of problems the specialization of Ijtehad is necessary.