Al Fadi and Lloyd discuss what sharia law really is; a law or a secret.  Sharia is both religious and political . Muslims are not suppose to teach it to non- Muslims because non- muslins will be learning it in bad faith, therefore it is  secret with a purpose.  It is the final interpretation of the Quran and Sunna.  It copied and changed the Babylonian Talmud.  The end goal of Islam is the will of Allah by persuasion or force. Lloyd refers to lots of sources one of them is :"The Islamic Talmud" by Judith Wagner.  He adds that the Quran is not complete by itself ; it needs the Sunna and the law.