An Introduction
Roots of faith · Branches of practice · Frequently asked questions
Usool al-Deen — Roots of Religion
Furoo al-Deen — Branches of Religion
Shia Islam is rooted in a question that goes beyond mere belief — it is grounded in historical evidence about the rightful succession after the Prophet Muhammad's death in 632 CE. Shia Muslims hold that God chose Imam Ali ibn Abi Talib as the rightful leader after the Prophet, and that the Prophet made this designation explicit and public at Ghadir al-Khumm on his return from the Farewell Pilgrimage. This is not simply the opinion of a group of companions — it is a position grounded in historical narration accepted across many Islamic sources. Where Shia and Sunni Muslims diverge is in how they interpret the events that followed: that leadership passed to others, bypassing Imam Ali. The pivotal tragedy at Karbala in 680 CE, where Imam Husayn was martyred while standing against unjust rule, deepened and defined Shia identity in ways that continue to shape the tradition to this day.
"Shia" is short for "Shiat Ali," meaning "the partisans" or "followers of Ali." But being a Shia is not merely a matter of affiliation — it comes with responsibilities. Imam Ali himself is reported to have defined a true Shia as one whose actions reflect their allegiance: someone who guards their tongue, purifies their heart, fulfills their duties, and embodies the values of the Ahl al-Bayt in their daily life. The title is not inherited but earned through conduct. Over time, this tradition of principled followership developed into a rich and distinct theological and legal heritage with its own schools of thought and scholarly tradition.
Shia Muslims make up roughly 10–15% of the global Muslim population, estimated at around 200 million people worldwide. While they are a minority globally, they form the majority in several countries including Iran, Iraq, Bahrain, and Azerbaijan, and represent significant communities in Lebanon, Pakistan, India, and Kuwait.
The largest concentrations of Shia Muslims are in Iran (roughly 90–95% of the population), Iraq (60–65%), and Azerbaijan. Significant Shia populations also exist in Lebanon, Pakistan, India, Saudi Arabia's Eastern Province, and among diaspora communities in North America, Europe, and Africa.
While Twelver Shia Islam is by far the largest branch — comprising the vast majority of Shia Muslims worldwide — several other traditions emerged historically, differing primarily on the question of which Imam's line of succession to follow. The Ismaili tradition (also known as Sevener Shia) follows a line diverging at the sixth Imam, recognising Ismail ibn Jafar rather than Musa al-Kadhim as the seventh Imam. Ismailis today are led by the Aga Khan and are a globally active community. The Zaidi tradition (also known as Fiver Shia) is prominent in Yemen and holds a more moderate theological position, accepting a qualified human leader rather than requiring divine designation. The Alawi and Alevi traditions, found primarily in Syria and Turkey respectively, incorporate distinct theological and cultural elements that diverge significantly from mainstream Twelver practice. All of these traditions trace their roots to the Prophet's household (Ahl al-Bayt) and honour Imam Ali, though their beliefs and practices vary considerably from one another and from Twelver Shia Islam.
The five daily prayers can be offered by Shia Muslims either at five separate times or combined into three time-windows: morning (Fajr alone), midday and afternoon together (Dhuhr and Asr), and evening and night together (Maghrib and Isha). Both approaches are permitted in Shia jurisprudence, based on narrations in which the Prophet himself combined prayers on various occasions — a practice documented not only in Shia sources but in prominent Sunni hadith collections as well. Interestingly, when the companion Ibn Abbas was asked why the Prophet combined prayers, he replied that the Prophet did so "so that his nation would not face hardship" — suggesting the intent was ease without abandonment of the prayer. Shia jurisprudence permits combining but considers praying each prayer at its own designated time to be preferable.
The turbah is a small tablet — most commonly made from dried clay — upon which Shia Muslims place their forehead during prostration (sujood). This is based on a narration from the Prophet that prayer is only valid when prostration is made on earth or on what grows from it. Valid surfaces for sajdah include: earth and soil, sand, stone, and plant-derived materials that are not eaten or worn — such as straw, paper, or certain wood. Karbala clay holds special spiritual significance due to Imam Husayn's martyrdom there and is the most widely used material for the turbah, though not the only permissible one. Metals, minerals, food products, cotton, wool, and synthetic materials are generally not valid surfaces for prostration.
The Shia call to prayer (adhan) includes the phrase "Hayya ala khayr al-amal" (Hasten to the best of deeds), which is omitted in most Sunni versions. As for the phrase "Ashhadu anna Aliyyan waliyyullah" (I bear witness that Ali is the friend of God), Shia scholars agree that it is not part of the original adhan and is therefore not obligatory. The majority position permits its recitation after the standard phrases as a recommended expression of faith and love for Imam Ali — but only on the condition that it is not treated as part of the adhan itself. Reciting it as though it were an obligatory component would render the adhan invalid according to this scholarly consensus.
Dua Kumayl is one of the most beloved supplications in Shia tradition, attributed to Imam Ali and taught to his companion Kumayl ibn Ziyad. It is a lengthy, deeply moving prayer of repentance, seeking God's mercy and forgiveness, and is customarily recited on Thursday nights. Its themes of human frailty, divine compassion, and spiritual longing have made it central to Shia devotional life across centuries.
Twelver Shia Islam — the largest branch — recognizes a lineage of twelve divinely guided leaders beginning with Imam Ali and ending with Imam Muhammad al-Mahdi, who is believed to be in occultation. Each Imam was from the Ahl al-Bayt (the Prophet's household) and is considered infallible (masoom), possessing special knowledge and authority to guide the Muslim community in both religious and worldly matters.
On the 10th of Muharram 680 CE (known as Ashura), Imam Husayn ibn Ali — the grandson of the Prophet Muhammad — was killed along with approximately 72 companions by the vastly larger forces of the Umayyad caliph Yazid near Karbala in modern-day Iraq. Imam Husayn had been called upon by the people of Kufa to lead them, and set out with his family and a small group of loyal companions. When support failed to materialise and it became clear that the only alternative was surrender to Yazid's authority — which he saw as corrupt and a betrayal of Islam — he refused. He chose martyrdom over the legitimisation of unjust rule. For Shia Muslims, Karbala is far more than a historical tragedy. It is a moral and spiritual reference point that speaks to every generation: a declaration that principles must not be compromised even at the cost of one's life, family, and everything held dear. The grief of Karbala is kept alive through the annual commemorations of Ashura and Arbaeen — not as passive mourning, but as a continuous renewal of commitment to justice and truth.
Imam Muhammad al-Mahdi, the twelfth Imam, is believed to have gone into occultation (ghaybah) in 874 CE — first a minor occultation (during which communication occurred through four designated representatives), then a major occultation in which direct contact ceased. Shia Muslims believe he is alive and under divine protection, and will return at the end of times alongside Prophet Isa (Jesus) to establish global justice and equity. Central to this belief is the concept of Ismah — the Imam is divinely protected from sin, error, and forgetfulness in all matters of religion and leadership. During the major occultation, the Shia community is guided by the principle of Wilayat al-Faqih — the guardianship of the qualified jurist — in the absence of the Imam. Awaiting the Imam — intidhar — is itself considered an act of worship in Shia theology. It is not passive waiting but an active spiritual and moral state: striving to embody the values of the Imam, working toward justice in one's community, and maintaining readiness — spiritually, morally, and practically — for his reappearance.
Wilayat al-Faqih — the guardianship of the jurist — is the principle that during the occultation of the Twelfth Imam, a qualified senior scholar (faqih) assumes a degree of his leadership role over the community. The concept has both a narrow and a broad interpretation. In its narrow form, it means that a qualified scholar has authority over religious rulings, the administration of religious endowments, the care of orphans and those without guardians, and similar matters. In its broad form, most fully developed by Ayatollah Khomeini and implemented in the Islamic Republic of Iran, it extends to comprehensive political governance of the Muslim community. The scope of the jurist's authority during the occultation remains a living question within Shia scholarly tradition.
No. Shia Muslims do not worship the Imams, and doing so would be considered shirk (associating partners with God), which is the gravest sin in Islam. The Imams are venerated as spiritually elevated, infallible guides and intercessors — but they are human beings, not divine. The love (walayah) of the Ahl al-Bayt is considered a religious duty, but it is distinct from worship, which belongs to God alone.
The central difference is the question of legitimate leadership after the Prophet. Shia Muslims believe this was divinely designated to Ali and his descendants, giving Imamah (leadership) a theological — not merely political — dimension. Shia theology also places greater emphasis on the role of reason (aql) in religious matters, the infallibility of Imams, and the concept of intercession through the Ahl al-Bayt.
Shia Muslims believe that the caliphates of Abu Bakr, Umar, and Uthman — while acknowledged as historical facts — represented a deviation from what the Prophet had designated at Ghadir Khumm, where he declared Ali as his successor. The Quran verse sometimes cited to justify consultation-based governance (42:38 — "their affairs are by counsel among themselves") applies to everyday human affairs, not to divine succession, which belongs solely to God's authority. This doesn't necessarily mean Shia Muslims condemn these figures in their personal lives, but the theological position is that the rightful leadership was bypassed, with significant consequences for Islamic history.
Shia Muslims hold a nuanced view on the Sahaba (companions of the Prophet). Rather than treating them as a uniformly infallible group, each companion is evaluated individually based on their conduct and loyalty — particularly in relation to the Prophet's family and his explicit designations. Those who stood faithfully by the Ahl al-Bayt — such as Salman al-Farsi, Abu Dharr al-Ghifari, Miqdad ibn al-Aswad, and Ammar ibn Yasir — are held in the highest esteem. Others are respected for their service to Islam while specific actions or decisions may be critiqued on historical and theological grounds. This approach reflects the Shia emphasis on reason and evidence: proximity to the Prophet is honoured, but it does not confer blanket infallibility. The criterion is adherence to his message and his designated successors.
On the question of the Prophet's wives, the Shia position begins with the Quran, which honours them with the title Ummahat al-Muminin — Mothers of the Believers (33:6) — a designation fully acknowledged within Shia Islam, and one that makes insulting them forbidden, as affirmed by senior maraji including Ayatollah Khamenei. That said, Shia scholarship does not exempt the historical conduct of the Prophet's wives from critical evaluation, particularly regarding events that unfolded after his passing. The distinction is consistent: the Quranic honour is upheld, historical critique remains within the bounds of scholarship, and abusive language is unanimously forbidden.
Yes. While both Shia and Sunni Muslims accept the Quran, their hadith traditions differ significantly — not only in their collections but in their underlying methodology. Shia hadith scholarship has no equivalent to the Sunni concept of "Sahih" collections, where a curated corpus is considered collectively authoritative. Instead, each hadith is evaluated individually by scholars, who assess the reliability of its chain of transmission (isnad) and its content before it can be accepted or acted upon. This ongoing, case-by-case deliberation is a defining feature of Shia hadith sciences. The primary Shia collections — Al-Kafi, Man La Yahduruhu al-Faqih, and Tahdhib al-Ahkam — prioritize narrations transmitted through the Ahl al-Bayt and the Imams, in keeping with the Prophet's directive in the Hadith al-Thaqalayn. A notable point of divergence: one version of that very hadith in some Sunni sources reads "the Book of God and my sunnah" rather than "the Book of God and my progeny." Shia scholars — and many others — note that the "sunnah" version did not appear until after the second century AH and regard it as a later interpolation, while the "progeny" version is narrated by dozens of companions across both traditions.
A Marja (plural: maraji) is a senior Shia scholar of the highest religious rank, qualified to issue independent legal rulings (ijtihad) and be followed by other believers in matters of religious practice. During the occultation of the Twelfth Imam, maraji serve as the primary religious authorities. Shia Muslims typically choose one living Marja to follow in their religious practice, paying a religious tax (khums) partially to support his work and the seminaries he oversees.
Within Twelver Shia Islam, the Usooli and Akhbari schools represent two distinct approaches to how religious rulings are derived. The core difference lies in the sources of jurisprudence each tradition recognises. The Usooli school — the dominant tradition, followed by the vast majority of Shia Muslims today — derives rulings from four sources: the Quran, authenticated Sunnah (the practice and sayings of the Prophet and the Imams), Aql (reason), and Ijma (scholarly consensus). The inclusion of Aql as an independent source is a defining feature of the Usooli approach: the intellect is considered a valid means of arriving at religious knowledge, and rational demonstration can confirm or support what scripture establishes. Ijma, the consensus of qualified scholars, is similarly recognised as carrying authoritative weight when it reflects a reliable transmission of the Imam's position. The Akhbari school, a minority tradition with historical roots in the 17th century, restricts its sources to the Quran and the narrations (akhbar) of the Prophet and the Imams — rejecting independent rational reasoning and scholarly consensus as standalone sources. For Akhbaris, rulings must be traced directly to textual narrations without the additional layer of ijtihad. The Akhbari tradition is a small minority today, found mainly in parts of Bahrain and southern Iraq. The content on this site reflects the Usooli position.
No — and this is one of the most persistent misconceptions about Shia Islam. The unanimous position of all major Shia scholars, from the earliest classical authorities to the present day, is that the Quran in circulation today is the complete, unaltered word of God. Shaykh al-Saduq (d. 991 CE) wrote: "Our belief is that the Quran which Allah revealed to His Prophet is the same as the one between the two covers. It is in the hands of the people, and is not greater in extent than that." [Kitabu'l-I'tiqadat, p. 63] Grand Ayatollah al-Khoei likewise affirmed this and clarified that Imam Ali's codex was a scholarly exegesis with commentary — not a variant Quran. The Quranic basis is clear: "Indeed, it is We who sent down the Reminder and We will be its guardian." (15:9). A small number of weak narrations in classical collections are sometimes cited to suggest otherwise; mainstream Shia scholarship consistently rules these as either weak, misunderstood, or referring to distortion of meaning through misinterpretation — not distortion of the text itself. As Shaykh Faiz Kashani wrote: "If the Quran is considered altered, then nothing in the Quran remains reliable." [Tafsir al-Safi, vol. 1, p. 23]
The consensus among the most senior Shia maraji is unambiguous: cursing or abusing figures revered by Sunni Muslims is forbidden (haram) and contrary to the teachings of the Ahl al-Bayt. Grand Ayatollah Sistani issued a fatwa stating this is "condemned and denounced, and is contrary to the instructions of the Shia Imams." Ayatollah Khamenei issued a formal fatwa on 30 September 2010 prohibiting insults against any of the Prophet's companions or wives, stating: "Anyone who insults any of the Prophet's wives has insulted the Prophet." The fatwa was praised by Sheikh Ahmed el-Tayeb, the Grand Imam of Al-Azhar. Ayatollah Khomeini established Islamic Unity Week in 1979 and stated: "We are one with Sunni Muslims. We are a unit, like a Muslim and his brother. Whoever wants to cause strife is either ignorant or malicious." Other senior maraji — including Ayatollah Javadi Amoli, Makarem Shirazi, and Mousavi Ardebili — have issued parallel positions. An important nuance: scholars distinguish between theological and historical critique of events (which remains within scholarship) and abusive verbal attack (sabb), which they unanimously forbid.
The position of the senior Shia maraji is clear: Sunni Muslims are fellow Muslims whose lives, property, and honour are inviolable — they are not considered kafir (unbelievers). Grand Ayatollah Sistani's office has explicitly and publicly refuted claims that he considers Sunnis who do not believe in the Imamate to be kafir. His fatwa states: "From the viewpoint of the Shia, the Ahl al-Sunnah are counted as Muslims, and all of the laws of Islam apply to them. Marrying them is permissible. They can inherit from Shia, and Shia can inherit from them. The lives, property, and honour of all of them are inviolable." He has also said: "Shia should defend the social and political rights of the Ahl al-Sunnah before they defend their own rights — you should not say 'Sunnis are our brothers'; rather say 'Sunnis are our life'." Ayatollah Khomeini stated: "Muslims, whether Sunni or Shia, are brothers and therefore equals." This position is also rooted in the practice of the Imams themselves, who instructed followers to pray with, attend the funerals of, and be exemplary neighbours to Sunni Muslims in their communities.
Ashura falls on the 10th of Muharram — the first month of the Islamic calendar — and commemorates the martyrdom of Imam Husayn at Karbala. It is the most solemn day in the Shia calendar, marked by mourning gatherings (majalis), processions, the recitation of elegies, and acts of charity. Far from mere ritual, Ashura carries a message of standing against oppression and injustice that remains deeply relevant to Shia communities worldwide.
Arbaeen (meaning "forty") falls forty days after Ashura and marks the end of the mourning period for Imam Husayn. It is observed by one of the largest annual human gatherings on earth: millions of pilgrims — many walking for days — converge on Karbala in Iraq to visit Imam Husayn's shrine. The walk has become a powerful symbol of devotion, solidarity, and the enduring resonance of the Karbala tragedy.
Visiting the shrines (ziyarah) of the Prophet, the Imams, and other revered figures is a deeply embedded practice in Shia Islam. It is understood as a way to honor those who dedicated their lives to God, to seek their intercession, and to spiritually connect with the best examples of humanity. The practice is grounded in narrations from the Prophet encouraging the visiting of graves, and is seen as an act of love and remembrance rather than worship of the buried.
Muta, or nikah al-mutah, is a form of marriage contract in Shia jurisprudence agreed upon for a specified period of time with a specified dowry. It is considered valid under Shia law based on a Quranic verse (4:24) and narrations from the Prophet. Sunni scholars consider it to have been abrogated. Among Shia scholars, conditions and rulings around Muta vary, and its use is a matter of ongoing scholarly discussion and societal debate within Shia communities.
Shafa'ah refers to the intercession of the Prophet, the Imams, and other holy figures on behalf of believers before God on the Day of Judgement. Shia theology holds that God may grant these individuals the right to intercede for others as an expression of His mercy. This is distinct from worship — the intercessors themselves have no independent power; they act only with God's permission. The concept is also present in Sunni Islam, though the scope differs.
Barzakh refers to the intermediate realm that the soul enters between physical death and the resurrection on the Day of Judgement. In Shia belief, the soul remains conscious in Barzakh and may experience a foretaste of either reward or punishment based on one's deeds. It is sometimes understood as a kind of purgatory, though the Quranic and hadith descriptions leave much of its nature beyond complete human comprehension.
Shia Muslims believe that Imam Mahdi will emerge from occultation at the end of times, accompanied by the return of Prophet Isa (Jesus), to restore justice and equity to a world filled with oppression and corruption. His return will be preceded by specific signs. The exact timing is known only to God. Rather than passively waiting, Shia theology encourages believers to remain spiritually prepared and to strive for justice in the world in the meantime.
Tawassul is the practice of seeking nearness to God through a means (wasila) — most commonly through the Prophet, the Imams, or other pious individuals. In Shia practice, this may take the form of asking these figures to pray to God on one's behalf, or invoking them as a spiritual intermediary. It is grounded in a Quranic verse (5:35) urging believers to seek a means of approach to God. Shia scholars distinguish Tawassul clearly from worship, as all requests ultimately go to and are fulfilled by God alone.
Key References
Further Reading
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