The Forty Hadith of Imam Nawawi No harm and no reciprocation of harm Abu Sa'eed al-Khudree Hasan There should be neither harming (darar) nor reciprocating harm (dirar). https://parallelquran.com/hadith/forty-nawawi-32/ The Forty Hadith of Imam Nawawi Changing evil with the hand, tongue, or heart Abu Sa'eed al-Khudree Sahih I heard the Messenger of Allah (ﷺ) say, “Whosoever of you sees an evil, let him change it with his hand; and if he is not able to do so, then [let him change it] with his tongue; and if he is not able to do so, then with his heart — and that is the weakest of faith.” https://parallelquran.com/hadith/forty-nawawi-34/