At first the reign of the caliph Uthman went smoothly. It's just a governor of Kufa, who named Mughirah bin Syu'bah fired by the Caliph Uthman, and replaced by Sa'ad ibn Abi Waqqas, on the basis of the Caliph Umar bin Khattab's will.
Then he fired also some high officials and princes are not good, to facilitate arrangements, job chairs officials and princes were filled and replaced with the families, he is credible (have the ability) in the field.
Action which impressed him this nepotism, inviting protests from people who get fired, then came the hordes who dipimpim by Abdullah bin Saba 'who demanded that officials and the rulers are appointed by the Caliph Uthman was fired anyway. Proposals Abdullah bin Saba 'was rejected by the Caliph Uthman. At the time of the caliph Uthman ibn Affan's flow was Shia born and Abdullah bin Saba 'is referred to as the originator of the Shiite stream.
Feeling hurt, Abdullah bin Saba 'and then make a great propaganda slogan in the form of anti Bani Umayyad, including Uthman ibn Affan. So many local residents who ingested incitement Abdullah bin Saba '. As a result, there came a large number (thousands) to the medina area residents who demanded the Caliph, the demands of many of these areas are not granted by the caliph, but the demands of Egypt, which is to dismiss the Governor of Egypt Uthman, Abdullah bin Abi Sarah, and replace it with Muhammad bin Abi Bakr.
Because the Egyptian people's demands have been granted by the caliph, then they return to Egypt, but before they return to Egypt, they met someone who was known to carry a letter on behalf of Uthman ibn Affan. Contents are orders that the Governor of Egypt's old is sarah kill Abdullah bin Abi Abi Bakr Muhammad Governors (new governor) Therefore, they returned again to the medina to request a determination to kill the Caliph because they feel cheated.
Having examined the letter, it was revealed that what makes the letter is Marwan bin Hakam. But they do the siege against the Caliph and requires two things:
In order to Marwan bin Hakam in qishas (penalty kill for killing people).
In order to put the office of Caliph Uthman Caliph.
Both charges are first, because the new Marwan planned to kill and have not really killed.While the demands of both, he adhered to the SAW Rasullulah message: "Behold, thou Uthman would wear oversized clothes. If you have worn it, do not disconnect "
After learning that the caliph Uthman did not want to grant their demands, then they move on him until the siege of forty days. The situation gets worse from day to day. His home is guarded by his friends, Ali ibn Talib, Zubair bin Awwam, Muhammad bin Talha, Hasan and Husayn ibn Ali ibn Abu Talib. Because tenderness and affection, he responded to it with siege siege-patient and polite speech.
Until one day, without being noticed by guards his house, come in hordes head of Muhammad bin Abu Bakar (Governor of New Egypt) and killed Uthman ibn Affan, who was reading the Quran. In another report, mentioned that killing is Aswadan bin Hamrab of Tujib, Egypt. Another report says the killer is the son of Al Ghafiki and Sudan Hamran.
He died in the year 35 H. Hajj the age of 82 years after serving as Deputy for 12 years. He was buried in Baqi cemetery in Medina.