Authentic
Sahih Muslim 49a
"Whoever of you sees something evil, let him change it with his hand; and if he is not able, then with his tongue; and if he is not able, then with his heart, and that is the weakest of faith."
مَنْ رَأَى مِنْكُمْ مُنْكَرًا فَلْيُغَيِّرْهُ بِيَدِهِ فَإِنْ لَمْ يَسْتَطِعْ فَبِلِسَانِهِ فَإِنْ لَمْ يَسْتَطِعْ فَبِقَلْبِهِ وَذَلِكَ أَضْعَفُ الإِيمَانِ "
Narrated by Abu Sa‘īd al-Khudri + 14 other versions Explained
