Who were the four Rightly-Guided Caliphs and why are they significant?

The four Rightly-Guided Caliphs (al-Khulafa ar-Rashidun) were Abu Bakr, Umar ibn al-Khattab, Uthman ibn Affan, and Ali ibn Abi Talib, who led the Muslim community consecutively after the Prophet Muhammad's ﷺ death in 632 CE, ruling until 661 CE. Each was a close companion of the Prophet ﷺ and is remembered for specific achievements: Abu Bakr preserved the unity of the ummah during the Ridda wars and initiated compilation of the Quran into a single manuscript; Umar oversaw rapid territorial expansion into Persia and the Levant and established administrative structures such as the diwan (register); Uthman standardized the Quranic text into the uniform recension still used today; and Ali, the Prophet's cousin and son-in-law, navigated a period of internal civil strife while emphasizing justice and piety. Sunni Muslims regard this era as exemplary governance rooted in consultation (shura), humility, and closeness to prophetic teaching, distinguishing it from the hereditary dynasties that followed. Their period is often held up as a model combining spiritual devotion with practical statecraft, though it also included real internal conflict, particularly during Uthman's and Ali's caliphates.

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