When Imam Ali ibn Abu Talib (A.S) learned that the Umayyads blamed him for killing A Othman, he said:
The Umayyads’s knowledge about me did not desist them for accusing me, nor did my precedence (in accepting Islam) keep these ignorant people from blaming me. Allah’s admonitions are more eloquent than my tongue. I contest against those who break away from Faith and oppose those who entertain doubts. Uncertainties should be placed before Holy Qur’an, the Book of Allah (for clarification). Certainly, people will be recompensed according to what they have in their hearts.