Despite apparent conspiracies against his Caliphate, Hazrat Usman kept on believing in the notion that he should never use force against Muslims. He always remained kind-hearted to his opponents and thought of convincing them with reason rather than using strength.
Due to their hate for Usman, one day his opponents entered his house when he was reading the Holy Quran. They brutally murdered him in his own house. In this way, Hazrat Usman was assassinated on Friday, 17th of Dhul Hijjah, 35 A.H when he was 84 years old.