Umar II
Umar ibn Abd al-Aziz (; 2 November 682 – ), commonly known as Umar II (), was the eighth Umayyad caliph. He made various significant contributions and reforms to the society, and he has been described as "the most pious and devout" of the Umayyad rulers and was often called the first Mujaddid and sixth righteous caliph of Islam.