Abu Sa'id al-Khudri said:
Marwan brought out the pulpit on 'Id. He began preaching before the prayer. A man stood and said: You opposed the sunnah, O Marwan. You brought out the pulpit on the 'Id, it was not brought out before: and you began preaching before the prayer. Abu Sa'id al-Khudri said: Wh is this (man) ? They (people) said: So-and so son of so-and-so. He has performed his duty. I heard the Messenger of Allah ﷺ say: He who observes and evil deed should change it with his hand if he can do so; if he cannot do, (he should change it) then with his tongue; if he cannot do then (he should change it) with his heart, and that is the weakest degree of the faith.

حَدَّثَنَا مُحَمَّدُ بْنُ الْعَلاَءِ، حَدَّثَنَا أَبُو مُعَاوِيَةَ، حَدَّثَنَا الأَعْمَشُ، عَنْ إِسْمَاعِيلَ بْنِ رَجَاءٍ، عَنْ أَبِيهِ، عَنْ أَبِي سَعِيدٍ الْخُدْرِيِّ، ح وَعَنْ قَيْسِ بْنِ مُسْلِمٍ، عَنْ طَارِقِ بْنِ شِهَابٍ، عَنْ أَبِي سَعِيدٍ الْخُدْرِيِّ، قَالَ أَخْرَجَ مَرْوَانُ الْمِنْبَرَ فِي يَوْمِ عِيدٍ فَبَدَأَ بِالْخُطْبَةِ قَبْلَ الصَّلاَةِ فَقَامَ رَجُلٌ فَقَالَ يَا مَرْوَانُ خَالَفْتَ السُّنَّةَ أَخْرَجْتَ الْمِنْبَرَ فِي يَوْمِ عِيدٍ وَلَمْ يَكُنْ يُخْرَجُ فِيهِ وَبَدَأْتَ بِالْخُطْبَةِ قَبْلَ الصَّلاَةِ . فَقَالَ أَبُو سَعِيدٍ الْخُدْرِيُّ مَنْ هَذَا قَالُوا فُلاَنُ بْنُ فُلاَنٍ . فَقَالَ أَمَّا هَذَا فَقَدْ قَضَى مَا عَلَيْهِ سَمِعْتُ رَسُولَ اللَّهِ ﷺ يَقُولُ " مَنْ رَأَى مُنْكَرًا فَاسْتَطَاعَ أَنْ يُغَيِّرَهُ بِيَدِهِ فَلْيُغَيِّرْهُ بِيَدِهِ فَإِنْ لَمْ يَسْتَطِعْ فَبِلِسَانِهِ فَإِنْ لَمْ يَسْتَطِعْ فَبِقَلْبِهِ وَذَلِكَ أَضْعَفُ الإِيمَانِ " .