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. (Using translation from Abū Dāʾūd 1140)
أَخْرَجَ مَرْوَانُ الْمِنْبَرَ فِي يَوْمِ عِيدٍ وَبَدَأَ بِالْخُطْبَةِ قَبْلَ الصَّلَاةِ فَقَامَ رَجُلٌ فَقَالَ يَا مَرْوَانُ خَالَفْتَ السُّنَّةَ أَخْرَجَتَ الْمِنْبَرَ فِي يَوْمِ عِيدٍ وَلَمْ يَكُنْ يُخْرَجُ بِهِ وَبَدَأْتَ بِالْخُطْبَةِ قَبْلَ الصَّلَاةِ وَلَمْ يَكُنْ يُبْدَأُ بِهَا قَالَ فَقَالَ أَبُو سَعِيدٍ مَنْ هَذَا قَالُوا فُلَانُ بْنُ فُلَانٍ فَقَالَ أَبُو سَعِيدٍ أَمَّا هَذَا فَقَدْ قَضَى مَا عَلَيْهِ سَمِعْتُ النَّبِيَّ ﷺ يَقُولُ مَنْ رَأَى مُنْكَرًا فَاسْتَطَاعَ أَنْ يُغَيِّرَهُ بِيَدِهِ فَلْيُغَيِّرْهُ فَإِنْ لَمْ يَسْتَطِعْ بِيَدِهِ فَبِلِسَانِهِ فَإِنْ لَمْ يَسْتَطِعْ بِلِسَانِهِ فَبِقَلْبِهِ وَذَلِكَ أَضْعَفُ الْإِيمَانِ لَفْظُ حَدِيثِ أَبِي مُعَاوِيَةَ