كتاب الإيمان وشرائعه
Read the English translation first, with the original Arabic directly underneath.
Abu Sa'eed said:
"I heard the Messenger of Allah [ﷺ] 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.'"
مَنْ رَأَى مُنْكَرًا فَلْيُغَيِّرْهُ بِيَدِهِ فَإِنْ لَمْ يَسْتَطِعْ فَبِلِسَانِهِ فَإِنْ لَمْ يَسْتَطِعْ فَبِقَلْبِهِ وَذَلِكَ أَضْعَفُ الإِيمَانِ