The meaning of the source of Sharia in the subject laws of Iran from the perspective of theological jurisprudence

One of the legal sources is Sharia. But the term has always been in ambiguity in the legal texts, exactly, it’s unclear what the religion means and its scope. Is it restricted to the Book of God or to the Prophetic Book or Tradition or to the Book and Tradition of the Innocent (AS) or to the Book of God and the Tradition of the Innocent (AS) and Jurisprudence? This research, by searching the arguments of the book , tradition and the words of the great jurists, concludes that the truth of the Shari'ah is not in any doubt about the Almighty God and then in the truth of the Prophet (pbuh). There’s also no significant difference between Farrukhin and the truth of this word is based on both Uzayyah and the infallible on the basis of the Imamiyyah jurisprudence on which the laws of the Iranian state are based.