The main body of Shi'ism, in both number and its centrality within the traditional religious spectrum, is Twelve-imam Shi'ism. Then there is Seven-imam Shi'ism or Isma'ilism and Five-imam Shi'ism or Zaidism. Twelve-imam Shi'ism is the official religion of Persia and the majority of the population belongs to this school.

Ideals and realities of Islam On page 158 Saturday, January 5, 2013 @ 4:45pm