Ismah is the concept of infallibility in Islam. The word literally means "protection." Muslims believe that the prophet Muhammad and the prophets that preceded him possessed ismah. Shi'a Muslims also attribute the quality to Shi'a Imams as well as to the daughter of the prophet Muhammad, Fatima Zahra. This article needs to be cleaned up to conform to a higher standard of quality. ... For other uses, including people named Islam, see Islam (disambiguation). ... A Muslim is a believer in or follower of Islam. ... This article or section does not cite its references or sources. ... Shia Islam or Shi`ism (from the Arabic word شيعة, short for the historic phrase shi`at `Ali شيعة علي, meaning the followers of Ali) is the second-largest denomination of the religion of Islam. ... The Shia Imam is considered by the Shia sect of Islam to be the rightful successor to Muhammad, and is similar to the Caliph in Sunni Islam. ... Fatima Zahra (Arabic: فاطمة الزهراء translit: Fāţimah az-Zahrā’ or Faatemah al-Zahraa) was the daughter of the Islamic prophet Muhammad and his first wife Khadija. ...