The Twelvers and the Ismailis are sects within this branch that believes that Ali rather than Abu Bakr succeeded Muhammad.
This religious branch places special importance on the verse of purification. Practitioners of this branch observe the Mourning of Muharram, which climaxes at the Day of Ashura. Compared to another branch, this branch places special emphasis on Ismah, or infallibility, as well as "The People of the House." The largest sect in this branch believes in the (*) Occultation of the Mahdi and in a line of Twelve Imams. The Twelvers and the Ismailis are sects within this branch that believes that Ali rather than Abu Bakr succeeded Muhammad. For 10 points, name this second largest sect in Islam that is contrasted with Sunni.
This religious branch places special importance on the verse of purification.
Shi’a Islam (or Shi’ites; prompt on just “Islam”)