The assassination of Caliph Uthman in 656 CE did not merely end a life; it shattered the unity of the Muslim community and birthed the first great division in Islamic history. This event, known as the First Fitna, created a fracture that would never fully heal, splitting the Ummah into three distinct paths: the Sunnis, the Shias, and the Kharijites. The Sunnis, who would eventually comprise 87 to 90 percent of all Muslims, believed that the community should elect its leader and accepted Abu Bakr as the first caliph following the death of the Prophet Muhammad in 632 CE. In contrast, the Shias argued that leadership was a divine right reserved for the Prophet's family, specifically Ali ibn Abi Talib, the Prophet's cousin and son-in-law. The third group, the Kharijites, emerged as a radical breakaway faction during the civil war. They rejected both the Sunni and Shia positions, declaring that any Muslim who committed a grave sin or failed to support their specific political cause was an apostate worthy of death. This extreme doctrine of takfir, or excommunication, led the Kharijites to assassinate Ali himself while he was praying in the mosque of Kufa, an act that cemented their reputation as a sect willing to kill fellow Muslims to enforce their interpretation of faith.
The Four Paths of Law
Within the vast Sunni majority, the question of how to interpret the law gave rise to four distinct schools of jurisprudence, each named after a brilliant scholar from the 8th century CE. The Hanafi school, founded by Abu Hanifa al-Nu'man, became the dominant legal tradition in the Ottoman Empire and parts of South Asia, emphasizing reason and analogy in legal rulings. The Maliki school, established by Malik ibn Anas, held sway in North and West Africa, prioritizing the practices of the people of Medina as a living source of law. The Shafi'i school, created by Muhammad ibn Idris al-Shafi'i, offered a middle ground that balanced textual evidence with rational deduction, gaining prominence in East Africa and Southeast Asia. Finally, the Hanbali school, led by Ahmad ibn Hanbal, insisted on a strict adherence to the Quran and Hadith, rejecting human reasoning where it conflicted with scripture. These four madhhab, or schools of thought, were not mutually exclusive sects but rather methodological approaches to deriving legal rulings from the Quran, the Sunnah, and the consensus of the community. While they differed on specific details of prayer, inheritance, and commerce, they all shared the fundamental belief in the legitimacy of the first four caliphs and the authority of the Prophet's traditions.The Hidden Imams
The Shia branch of Islam, comprising 10 to 13 percent of the global Muslim population, centers its theology on the concept of the Imam, a divinely appointed leader who possesses spiritual and political authority over the community. The majority of Shias, known as Twelvers, believe that the Prophet Muhammad designated twelve specific successors, starting with Ali and ending with the Hidden Imam, who they believe is currently in occultation and will return at the end of time to bring justice to the world. This belief system, known as Twelver Shia Islam, is the dominant form of Shia Islam, accounting for 85 percent of all Shias. A smaller but historically significant group, the Ismailis, split from the Twelvers over a dispute regarding the sixth Imam, accepting Ismail ibn Jafar as the rightful successor. The Ismailis further divided into the Nizaris and the Musta'lis, with the latter splitting again into the Dawudi and Sulaymani Bohras. Another distinct group, the Zaydis, or Fivers, follow the teachings of Zayd ibn Ali and have historically maintained a closer theological affinity to Sunni jurisprudence, though they remain a Shia sect. These divisions were not merely academic but were often the result of violent power struggles and dynastic conflicts that shaped the political landscape of the Middle East for centuries.