if its not from the Holy Qur'an and the Sunnah then it is not Shariah there are differences in the particularities of Fiqh between the scholars based upon their slightly different understandings of what the Quran and Sunnah are telling us, but the important thing is that the true scholars of Islam were academically and spiritually suitably qualified to try and interpret Quran and Sunnah directly (especially as they stayed within one of the four authoritative traditions of fiqh), but we are not.