Abu Hajal Muslim ibn Awsaja was a companion of what prophet who was the founder of islam, and who united Arabia into a single Muslim polity?
Muhammad Muhammad (Arabic: محمد‎ ‎ ; ] ; c. 570 CE – 8 June 632 CE) is the prophet and founder of Islam. According to Islamic doctrine, he was God's Messenger, sent to confirm the essential teachings of monotheism preached previously by Adam, Abraham, Moses, Jesus, and other prophets. He is viewed as the final prophet of God in all the main branches of Islam, though some modern denominations diverge from this belief. Muhammad united Arabia into a single Muslim polity and ensured that his teachings, practices, and the Quran formed the basis of Islamic religious belief.
Kumayl ibn Ziyad Kumayl bin Ziyad an-Nakha'i (Arabic: كُميل بن زياد النخعي‎ ‎ ) was among the most loyal companions of Imam Ali Ibn Abi Talib. Moreover, Kumayl occupies a prominent position in Shia Islam. Converting to Islam during the time of Islamic prophet Muhammad, he rose to a position of prominence during the caliphates of Uthman and Ali. In the caliphate of Ali, Kumayl flourished and served him in the most disciplined of ways. However, he is recognized for his pious and humble nature as well as preserving Imam Ali's teachings. Kumayl is best known for the "du'a" (supplication) of Prophet Khidr, which is commonly known by the name "du'a Kumayl."