Shia Islam is the second largest denomination of Islam (approx. %10-20), after Sunni Islam. The followers of Shia Islam are calledShi'ites or Shias. "Shia" is the short form of the historic phrase Shīʻatu ʻAlī (شيعة علي), meaning "followers of Ali", "faction of Ali", or "party of Ali".
Like other schools of thought in Islam, Shia Islam is based on the teachings of the Islamic holy book, the Qurʻān and the message of the final prophet of Islam, Muhammad. In contrast to other schools of thought, Shias believe that only the Almighty has the right to chose his representative to safeguard Islam, Quran and Shariah.