The Four Rightly-Guided Caliphs

After the Prophet Muhammad's ﷺ death in 632 CE, the Muslim community was led in succession by four companions, known collectively as al-Khulafa al-Rashidun, the Rightly-Guided Caliphs: Abu Bakr, Umar ibn al-Khattab, Uthman ibn Affan, and Ali ibn Abi Talib. Their combined rule spanned roughly thirty years, until 661 CE. Abu Bakr, the first caliph, held the community together through a series of rebellions in the immediate aftermath of the Prophet's ﷺ death and initiated the compilation of the Quran into a single written text. Umar, the second caliph, oversaw a period of rapid territorial expansion and built much of the administrative structure of the early Muslim state, including its calendar and system of public treasury. Uthman, the third caliph, standardized the written text of the Quran into the form still used today. Ali, the fourth caliph and the Prophet's ﷺ cousin and son-in-law, led during a period of significant internal political conflict within the Muslim community. This period is described as 'rightly-guided' in Sunni tradition because these four leaders were close, direct companions of the Prophet ﷺ who had witnessed his guidance firsthand, and their combined era is often looked to as a model of governance grounded directly in prophetic example, even as it included real and difficult political challenges.