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  1. Umar - Wikipedia

    Umar was assassinated by the Persian slave Abu Lu'lu'a Firuz in 644. Umar is widely credited with expanding the Islamic world beyond Arabia and introducing the Hijri Calendar. [5][6] …

  2. Umar I | Biography, Caliph, Achievements, & Death | Britannica

    Oct 30, 2025 · Umar I, the second Muslim caliph (from 634). Umar transformed the Islamic state from an Arabian principality into a world power, conquering Mesopotamia and Syria and …

  3. Umar - World History Encyclopedia

    Jan 23, 2020 · Umar ibn al-Khattab (reigned 634 to 644 CE) was the second caliph of the Rashidun Caliphate (632 to 661 CE, as the first four caliphs are referred to by the Sunni …

  4. Umar ibn al-Khattab: Biography, Leadership, Reforms, & Facts

    Aug 18, 2024 · Umar was a close companion of Prophet Muhammad and played a critical role in shaping the early Islamic state, emphasizing the principles of equity, accountability, and public …

  5. Life Story of Umar ibn Al-Khattab (AS) - My Islam

    So, Who is Umar Ibn Al-Khatab? He is the great man in simplicity, the simple in strength, the strong in justice and mercy. He is the man born of the land of the Peninsula, nurtured by Islam. …

  6. Biography of Umar Ibn Al-Khattab (R.A.) | IslamicFinder

    His full name is Umar ibn Al-Khattab ibn Nufayl ibn Abdul- Uzza. He was known as Abu Hafs and earned the nickname of Al Farooq (the Criterion) because he showed his Islam openly in …

  7. Umar ibn al-Khattab - New World Encyclopedia

    Umar ibn al-Khattab (in Arabic, عمر بن الخطاب) (c. 581 - November, 644), sometimes referred to as Umar Farooq or just as Omar or Umar, was from the Banu Adi clan of the Quraysh tribe, the …