"Abu Sa'eed Al-Khudri said: 'I heard the Messenger of Allah [SAW] say: Whoever among you sees an evil and changes it with his hand, then he has done his duty. Whoever is unable to do that, but changes it with his tongue, then he has done his duty. Whoever is unable to do that, but changes it with his heart, then he has done his duty, and that is the weakest of Faith.'"  

سَمِعْتُ رَسُولَ اللَّهِ ﷺ يَقُولُ مَنْ رَأَى مُنْكَرًا فَغَيَّرَهُ بِيَدِهِ فَقَدْ بَرِئَ وَمَنْ لَمْ يَسْتَطِعْ أَنْ يُغَيِّرَهُ بِيَدِهِ فَغَيَّرَهُ بِلِسَانِهِ فَقَدْ بَرِئَ وَمَنْ لَمْ يَسْتَطِعْ أَنْ يُغَيِّرَهُ بِلِسَانِهِ فَغَيَّرَهُ بِقَلْبِهِ فَقَدْ بَرِئَ وَذَلِكَ أَضْعَفُ الإِيمَانِ  

I head the Messenger of Allah ﷺ say: If any one you sees something objectionable, he should change it with his hand if he can change it with his hand. (The narrator Hammad broke the rest of the tradition which was completed by Ibn al-‘Ala’.) But if he cannot (do so), he should do it with his tongue, and if he cannot (do so with) his tongue he should do it in his heart, that being the weakest form of faith.  

سَمِعْتُ رَسُولَ اللَّهِ ﷺ يَقُولُ مَنْ رَأَى مُنْكَرًا فَاسْتَطَاعَ أَنْ يُغَيِّرَهُ بِيَدِهِ فَلْيُغَيِّرْهُ بِيَدِهِ وَقَطَعَ هَنَّادٌ بَقِيَّةَ الْحَدِيثِ وَفَّاهُ ابْنُ الْعَلاَءِ فَإِنْ لَمْ يَسْتَطِعْ فَبِلِسَانِهِ فَإِنْ لَمْ يَسْتَطِعْ بِلِسَانِهِ فَبِقَلْبِهِ وَذَلِكَ أَضْعَفُ الإِيمَانِ  

"مَنْ رَأَى مِنْكُمْ مُنْكَرًا فَليُغيِّرْهُ بِيَدِهِ، فَإِنْ لَمْ يَسْتَطِعْ أَنْ يُغيِّرَهُ بيَدِهِ فَبلِسَانِهِ، فَإِن لَمْ يَسْتطِعْ فَبِقَلبهِ، وَذَلِكَ أَضْعَفُ الإِيمَانِ".