# Caliphate of Ali ibn Abi Talib

Ali ibn Abi Talib (may Allah be pleased with him) became the fourth and final Rashidun Caliph in 35 AH (656 CE), following the assassination of Uthman ibn Affan. His caliphate lasted approximately five years until his own assassination in 40 AH (661 CE), a period marked by internal conflict that permanently shaped the Muslim community.

Succession

Ali was the Prophet Muhammad's (peace and blessings be upon him) cousin and son-in-law, married to Fatimah (may Allah be pleased with her). He was among the earliest converts to Islam and one of the most knowledgeable Companions in matters of jurisprudence and Quranic interpretation. After Uthman's murder, the people of Medina pledged allegiance to Ali as Caliph.

However, the pledge was not universal. Muawiyah ibn Abi Sufyan, the governor of Syria and a relative of Uthman, withheld his allegiance, demanding that Uthman's killers be brought to justice first. This disagreement formed the basis of the first major political division in the Muslim community.

The Battle of the Camel (36 AH / 656 CE)

The first armed conflict of Ali's caliphate occurred when Talhah ibn Ubaydullah and Zubayr ibn al-Awwam, both senior Companions, along with Aisha (may Allah be pleased with her), the Mother of the Believers, marched to Basra seeking justice for Uthman's murder. Despite negotiations, fighting broke out near Basra in what became known as the Battle of the Camel (Jamal), named after the camel Aisha rode.

Both Talhah and Zubayr were killed, and Ali's forces prevailed. Aisha was treated with full honor and escorted back to Medina. This battle was a source of deep grief for all involved, as Companions who had fought together against polytheism now faced each other.

The Battle of Siffin (37 AH / 657 CE)

The more consequential conflict was the Battle of Siffin against Muawiyah's Syrian forces on the banks of the Euphrates. After days of intense fighting, Muawiyah's troops raised copies of the Quran on their spears, calling for arbitration by the Book of Allah. Ali, though reluctant, accepted arbitration to prevent further bloodshed.

The arbitration at Adhruh (or Dumat al-Jandal) ended inconclusively, with each side's arbitrator failing to agree. This outcome weakened Ali's position politically without resolving the underlying dispute.

The Khawarij

The decision to accept arbitration caused a faction of Ali's own supporters to rebel, declaring that "judgment belongs to Allah alone" (la hukma illa lillah). These dissenters became known as the Khawarij (those who went out). They considered both Ali and Muawiyah to be disbelievers for submitting to human arbitration in a matter they believed was settled by divine command.

Ali confronted the Khawarij at the Battle of Nahrawan (38 AH), defeating them decisively. However, the Khawarij movement survived and would continue to challenge Muslim rulers for centuries, developing a theological position that any Muslim who commits a major sin is a disbeliever.

Ali's Governance and Knowledge

Despite the political turmoil, Ali was renowned for his justice, eloquence, and deep knowledge of Islam. He moved the capital from Medina to Kufa in Iraq, which was more centrally located for managing the vast caliphate.

His sermons, letters, and judicial rulings were collected in the famous compilation Nahj al-Balagha (Peak of Eloquence). The Prophet (peace and blessings be upon him) had said of him: "I am the city of knowledge and Ali is its gate."

Assassination

On the 19th of Ramadan, 40 AH (January 661 CE), Ali was struck with a poisoned sword by Abd al-Rahman ibn Muljam, a Khawarij, while leading the Fajr prayer in the Great Mosque of Kufa. He died two days later on the 21st of Ramadan, at approximately sixty-three years of age.

Legacy

Ali ibn Abi Talib holds a position of immense respect across all Muslim denominations. He is counted among the ten Companions promised Paradise and the four Rightly Guided Caliphs. His caliphate, though brief and troubled, produced lasting contributions to Islamic jurisprudence, governance, and spiritual thought. His martyrdom, along with the conflicts of his era, gave rise to lasting theological and political divisions in the Muslim world.

Sources

al-Tabari, Tarikh al-Rusul wal-Muluk
Ibn Kathir, al-Bidayah wan-Nihayah
Ibn al-Athir, al-Kamil fit-Tarikh
al-Dhahabi, Siyar A'lam an-Nubala