Twelvers believe in twelve Imams. The twelfth Imam is believed to be in occultation, and will appear again just before the "Qiyamah" (Islamic view of the Last Judgment). The Shia "hadiths" include the sayings of the Imams. Many Muslims criticise the Shia for certain beliefs and practices, including practices such as the Mourning of Muharram ("Mätam"). They are the largest Shia school of thought (93%), predominant in Azerbaijan, Iran, Iraq, Lebanon and Bahrain and have a significant population in Pakistan, Kuwait and the Eastern province of Saudi Arabia. The Twelver Shia are followers of "either the Jaf'ari or Batiniyyah madh'habs".

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