Although the Shiʿah numbered approximately 130 million of some 1.5 billion Muslims worldwide in the early 21st century, Shiʿism has exerted a great influence on Sunni Islam in several ways. The veneration in which all Muslims hold ʿAlī and his family and the respect shown to ʿAlī’s descendants (who are called sayyids and sharīfs) are obvious evidence of this influence. Ismāʿīlīs
Besides the main body of Twelver (Ithnā ʿAsharī) Shiʿah, Shiʿism has produced a variety of more or less extremist sects, the most important of them being the Ismāʿīlī. Instead of recognizing Mūsā as the seventh imam, as did the main body of the Shiʿah, the Ismāʿīlīs upheld the claims of his elder brother Ismāʿīl. One group of Ismāʿīlīs, called Seveners (Sabʿiyyah), considered Ismāʿīl the seventh and last of the imams. The majority of Ismāʿīlīs, however, believed that the imamate continued in the line of Ismāʿīl’s descendants. The Ismāʿīlī teaching spread during the 9th century from North Africa to Sind, in India, and the Ismāʿīlī Fāṭimid dynasty succeeded in establishing a prosperous empire in Egypt. Ismāʿīlīs are subdivided into two groups—the Nizārīs, headed by the Aga Khan, and the Mustaʿlīs in Mumbai, with their own spiritual head. The Ismāʿīlīs are to be found mainly in East Africa, Pakistan, India, and Yemen.
In their theology the Ismāʿīlīs have absorbed relatively radical elements and heterodox ideas compared with other Shiʿis. The universe is viewed as a cyclic process, and the unfolding of each cycle is marked by the advent of seven “speakers”—messengers of God with scriptures—each of whom is succeeded by seven “silents”—messengers without revealed scriptures; the last speaker (the Prophet Muhammad) is followed by seven imams who interpret the Will of God to humanity and are, in a sense, higher than the Prophet because they draw their knowledge directly from God and not from the Angel of Inspiration. During the 10th century, certain Ismāʿīlī intellectuals formed a secret society called the Brethren of Purity, which issued a philosophical encyclopaedia, The Epistles of the Brethren of Purity, aiming at the liquidation of positive religions in favour of a universalist spirituality.
Aga Khan III (1887–1957) took several measures to bring his followers closer to the main body of the Muslims. The Ismāʿīlīs, however, still have not mosques but jamāʿat khānahs (“gathering houses”), and their mode of worship bears little resemblance to that of the Muslims generally. Related sects
Several other sects arose out of the general Shiʿi movement—e.g., the Nuṣayrīs (ʿAlawites), the Yazīdīs, and the Druze—which are sometimes considered as independent from Islam. The Druze arose in the 11th century out of a cult of deification of the Fāṭimid caliph al-Ḥākim.
During a 19th-century anticlerical movement in Iran, a certain ʿAlī Moḥammad of Shīrāz appeared, declaring himself to be the Bāb (“Gate”; i.e., to God). At that time the climate in Iran was generally favourable to messianic ideas. He was, however, bitterly opposed by the Shiʿi ʿulamāʾ (council of learned men) and was executed in 1850. After his death, his two disciples, Ṣobḥ-e Azal and Bahāʾullāh, broke and went in different directions. Bahāʾullāh eventually declared his religion—stressing a humanitarian pacificism and universalism—to be an independent religion outside Islam. The Bahāʾī faith won a considerable number of converts in North America during the early 20th century. Other groups Sufism
Islamic mysticism, or Sufism, emerged out of early ascetic reactions on the part of certain religiously sensitive personalities against the general worldliness that had overtaken the Muslim community and the purely “externalist” expressions of Islam in law and theology. These persons stressed the Muslim qualities of moral motivation, contrition against overworldliness, and “the state of the heart” as opposed to the legalist formulations of Islam. The Aḥmadiyyah
In the latter half of the 19th century in Punjab, India, Mirza Ghulam Ahmad claimed to be an inspired prophet. At first a defender of Islam against Christian missionaries, he then later adopted certain doctrines of the Indian Muslim modernist Sayyid Ahmad Khan—namely, that Jesus died a natural death and was not assumed into heaven as the Islamic orthodoxy believed and that jihad “by the sword” had been abrogated and replaced with jihad “of the pen.” His aim appears to have been to synthesize all religions under Islam, for he declared himself to be not only the manifestation of the Prophet Muhammad but also the Second Advent of Jesus, as well as Krishna for the Hindus, among other claims. He did not announce, however, any new revelation or new law.
In 1914 a schism over succession occurred among the Aḥmadiyyah. One group that seceded from the main body, which was headed by a son of the founder, disowned the prophetic claims of Ghulam Ahmad and established its centre in Lahore (now in Pakistan). The main body of the Aḥmadiyyah (known as the Qadiani, after the village of Qadian, birthplace of the founder and the group’s first centre) evolved a separatist organization and, after the partition of India in 1947, moved their headquarters to Rabwah in what was then West Pakistan.
Both groups are noted for their missionary work, particularly in the West and in Africa. Within the Muslim countries, however, there is fierce opposition to the main group because of its claim that Ghulam Ahmad was a prophet (most Muslim sects believe in the finality of prophethood with Muhammad) and because of its separatist organization. Restrictions were imposed on the Aḥmadiyyah in 1974 and again in 1984 by the Pakistani government, which declared that the group was not Muslim and prohibited them from engaging in various Islamic activities. Fazlur Rahman The Editors of Encyclopaedia Britannica Islamic philosophy
The origin and inspiration of philosophy in Islam are quite different from those of Islamic theology. Philosophy developed out of and around the nonreligious practical and theoretical sciences, it recognized no theoretical limits other than those of human reason itself, and it assumed that the truth found by unaided reason does not disagree with the truth of Islam when both are properly understood. Islamic philosophy was not a handmaid of theology. The two disciplines were related, because both followed the path of rational inquiry and distinguished themselves from traditional religious disciplines and from mysticism, which sought knowledge through practical, spiritual purification. Islamic theology was Islamic in the strict sense: it confined itself within the Islamic religious community, and it remained separate from the Christian and Jewish theologies that developed in the same cultural context and used Arabic as a linguistic medium. No such separation is observable in the philosophy developed in the Islamic cultural context and written in Arabic: Muslims, Christians, and Jews participated in it and separated themselves according to the philosophic rather than the religious doctrines they held. The Eastern philosophers Background and scope of philosophical interest in Islam
The background of philosophic interest in Islam is found in the earlier phases of theology. But its origin is found in the translation of Greek philosophic works. By the middle of the 9th century, there were enough translations of scientific and philosophic works from Greek, Pahlavi, and Sanskrit to show those who read them with care that scientific and philosophic inquiry was something more than a series of disputations based on what the theologians had called sound reason. Moreover, it became evident that there existed a tradition of observation, calculation, and theoretical reflection that had been pursued systematically, refined, and modified for over a millennium.