Umar Alkhattab...

Umar (Arabic: عمر بن الخطاب; Transliteration: `Umar ibn al-Khattāb, c. 586–590  – 644^[1]) c. 2 Nov. (Dhu al-Hijjah 26, 23 Hijri^[2]) , was a leading companion and adviser to the Islamic prophet Muhammad, and became the second Muslim ruler after Muhammad's death and ruled for 10 years.^[3]

Converting to Islam in the 6th year after Muhammad's first revelation, he spent 18 years in companionship of Muhammad. He succeeded Caliph Abu Bakr on 23 August 634 as the second Caliph, and played a significant role in Islam. Under Umar the Islamic empire expanded at an unprecedented rate ruling the whole Sassanid Persian Empire and more than two thirds of the Eastern Roman Empire.^[4] His legislative abilities, his firm political and administrative control over a rapidly expanding empire and his brilliantly coordinated multi-prong attacks against the Sassanid Persian Empire that resulted in the conquest of the Persian empire in less than two years, marked his reputation as a great political and military leader.^[5] He was killed by a Persian captive.

Muslims view him as the Second Rashidun and know him as Farooq the great and Hero of Islam.^[6]

'Umar
Al-Farooq
Caliph Umar's empire at its peak, 644.
Reign	23 August 634–7 November 644
Born	586–590
Birthplace	Mecca, Arabia
Died	7 November 644
Place of death	Medina, Arabia
Predecessor	Abu Bakr
Successor	Uthman
Other titles	Al-Farooq