Editing Shia Islam (section)

====Doctrine====
The Zaydīs, Twelvers, and Ismāʿīlīs all recognize the same first four Imams; however, the Zaydīs consider [[Zayd ibn Ali|Zayd ibn ʿAlī]] as the 5th Imam. After the time of Zayd ibn ʿAlī, the Zaydīs believed that [[Sayyid|any descendant]] (''Sayyid'') of [[Hasan ibn Ali|Ḥasan ibn ʿAlī]] or [[Husayn ibn Ali|Ḥusayn ibn ʿAlī]] could become the next Imam, after fulfilling certain conditions.<ref name="Washington">{{cite web |date=1991 |title=Sunni-Shiʻa Schism: Less There Than Meets the Eye |url=http://www.wrmea.com/backissues/0591/9105024.htm |archive-url=http://webarchive.loc.gov/all/20050423070201/http://www.wrmea.com/backissues/0591/9105024.htm |archive-date=23 April 2005 |page=24}}</ref> Other well-known Zaydī Imams in history were Yahya ibn Zayd, [[Muhammad al-Nafs al-Zakiyya]], and Ibrahim ibn Abdullah.

The [[Imams of Yemen|Zaydī doctrine of Imamah]] does not presuppose the infallibility of the Imam, nor the belief that the Imams are supposed to receive divine guidance. Moreover, Zaydīs do not believe that the Imamate must pass from father to son but believe it can be held by any ''[[Sayyid]]'' descended from either [[Hasan ibn Ali|Ḥasan ibn ʿAlī]] or [[Husayn ibn Ali|Ḥusayn ibn ʿAlī]] (as was the case after the death of the former). Historically, Zaydīs held that Zayd ibn ʿAlī was the rightful successor of the 4th Imam since he led a [[Revolt of Zayd ibn Ali|rebellion against the Umayyads in protest of their tyranny and corruption]]. Muhammad al-Baqir did not engage in political action, and the followers of Zayd ibn ʿAlī maintained that a true Imam must fight against corrupt rulers.