Ijtihat conducted by Ali ibn Abi Talib continuqusly to understand in depth the purpose of Islamic law and reason for its implementation,and to realize maslahah (the pablic good) fopr human life on earth. This Ijtihat was always supported by nas (the Qur'an's and Sunnah's text) and also according to the spirit of shari'ah. The results of Ali's ijtihat if linked wich theapproach and application o…