Talib Hussain Zaidi
Undefined
Umar, also spelled Omar (عمر بن الخطاب ʻUmar ibn al-Khaṭṭāb, "Umar, Son of Al-Khattab"; c. 584 CE – 3 November 644 CE), was a senior companion of the Prophet Muhammad. He was appointed by Abu Bakr to succeed him and occupied the position of caliph till his death.
Uthman ibn Affan (Arabic: عثمان بن عفان, romanized: ʿUthmān ibn ʿAffān), also known in English by the Turkish and Persian rendering Osman (579/583 – 17 June 656), was a companion of the Prophet Muhammad and the third person to occupy the seat of caliphate after the Prophet.