page_title: Shia Islam
section_title: Infallibility
hierarchical_section_title: Shia Islam / Infallibility
caption_attribution_description: English: Arabic text with the name of Ali ibn Abi Talib
context_page_description: Shia Islam or Shi'ism is one of the two main branches of Islam. It holds that the Islamic prophet Muhammad designated Ali ibn Abi Talib as his successor and the Imam after him, most notably at the event of Ghadir Khumm, but was prevented from the caliphate as a result of the incident of Saqifah. This view primarily contrasts with that of Sunni Islam, whose adherents believe that Muhammad did not appoint a successor and consider Abu Bakr, who was appointed caliph by a group of Muslims at Saqifah, to be the first rightful caliph after Muhammad. A person observing Shia Islam is called a Shi'i.
  Shia Islam is based on Muhammad's hadith. Shia consider Ali to have been divinely appointed as the successor to Muhammad, and as the first Imam. The Shia also extend this Imammah to Muhammad's family, the Ahl al-Bayt, and some individuals among his descendants, known as Imams, who they believe possess special spiritual and political authority over the community, infallibility and other divinely ordained traits.
context_section_description: Ismah is the concept of infallibility or "divinely bestowed freedom from error and sin" in Islam. Muslims believe that Muhammad and other prophets in Islam possessed ismah. Twelver and Ismaili Shia Muslims also attribute the quality to Imams as well as to Fatimah, daughter of Muhammad, in contrast to the Zaidi, who do not attribute 'ismah to the Imams. Though initially beginning as a political movement, infallibility and sinlessness of the imams later evolved as a distinct belief of (non-Zaidi) Shiism.
  According to Shia theologians, infallibility is considered a rational necessary precondition for spiritual and religious guidance. They argue that since God has commanded absolute obedience from these figures they must only order that which is right. The state of infallibility is based on the Shia interpretation of the verse of purification. Thus, they are the most pure ones, the only immaculate ones preserved from, and immune to, all uncleanness. It does not mean that supernatural powers prevent them from committing a sin, but due to the fact that they have absolute belief in God, they refrain from doing anything that is a sin.
  They also have a complete knowledge of God's will. They are in possession of all knowledge brought by the angels to the prophets (nabi) and the messengers (rasul). Their knowledge encompasses the totality of all times. They thus act without fault in religious matters. Shias regard Ali as the successor of Muhammad not only ruling over the community in justice, but also interpreting Islamic practices and its esoteric meaning. Hence he was regarded as being free from error and sin (infallible), and appointed by God by divine decree (nass) to be the first Imam. Ali is known as "perfect man" (al-insan al-kamil) similar to Muhammad, according to Shia viewpoint.
caption: Ali is credited as the first male to convert to Islam.
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