Narrator:Abu Sa‘īd al-Khudri
عَنْ أَبِي سَعِيدٍ الْخُدْرِيّ رَضِيَ اللهُ عَنْهُ قَالَ سَمِعْت رَسُولَ اللَّهِ صلى الله عليه و سلم يَقُولُ: "مَنْ رَأَى مِنْكُمْ مُنْكَرًا فَلْيُغَيِّرْهُ بِيَدِهِ، فَإِنْ لَمْ يَسْتَطِعْ فَبِلِسَانِهِ، فَإِنْ لَمْ يَسْتَطِعْ فَبِقَلْبِهِ، وَذَلِكَ أَضْعَفُ الْإِيمَانِ" . [رَوَاهُ مُسْلِمٌ].
On the authority of Abu Sa`eed al-Khudree (may Allah be pleased with him) who said:
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.” [Muslim]
Reported by Muslim (No. 49a), Abu Dawud (No. 1140, 4340), At-Tirmidhi (No. 2172), An-Nasa’i (No. 5008), Ibn Majah (No. 1275, 4013) and Ahmad (No. 10651, 10723, 11034, 11068, 11090, 11442). Cited in The Forty Hadith of an-Nawawi (No. 34).