´Abu Sa'eed said:` "I heard the Messenger of Allah [SAW] say: 'Whoever among you sees an evil, let him change it with his hand; if he cannot, then with his tongue; if he cannot, then with his heart- and that is the weakest of Faith.'"
Hadith ReferenceSunan an-Nasa'i / The Book Of Faith and its Signs / Hadith: 5011
Hadith Gradingالألبانی:صحيح | زبیر علی زئی:صحيح مسلم