An Nawawi Hadith Number 34 : The Authority Of Abu Saeed Al-Khurdari

I heard the messenger of Allah say: “Whosoever of you sees an evil action, let him change it with his hand; and if he is not able to do so, then with his tongue; and if he is not able to do so, then with his heart; and that is the weakest of faith.”

Reporters.
Related by Muslim.