Uthman ibn Affan

Uthman ibn Affan () was the third ruler of the Muslim Empire and one of the four righteous caliphs of Sunni Islam. Uthman belonged to a noble family of Ummayyah, branch of the Quraish in Makkah. Uthman was one of the very few who was literate. When he became older, he started a business in cloth, which made him very rich.
Biography.
He was born in about the year 576 and was ruler for 12 years. During his time as ruler he conquered Khurasan and the regions of the west of the Arabian Peninsula. He also united the Muslim upon one uniform version of the Quran. He was well known for marrying two of Muhammad's daughters, Ruqayyah and Umm Kulthum, both at different times. For this, he became known as "Dhu al-Nurayn", the "Possessor of Two Lights". He participated in both immigrations, first to Ethiopia and then to Medina.
Death.
He was attacked while in his house, although he did not defend himself out of fear of further trouble. He was killed while reading the Qur'an by Sudaan ibn Hamran on Friday, June 17, 656. He died aged 79-80 years.