[Machine] He heard Muawiyah giving a sermon saying, "Oh people of the city, where are your scholars? I heard the Messenger of Allah ﷺ saying, 'This is the day of Ashura and Allah has not made its fasting obligatory. But I am fasting so whoever likes to fast may do so, and whoever likes to break the fast may do so.'"  

أَنَّهُ سَمِعَ مُعَاوِيَةَ يَخْطُبُ يَقُولُ يَا أَهْلَ الْمَدِينَةِ أَيْنَ عُلَمَاؤُكُمْ؟ سَمِعْتُ رَسُولَ اللهِ ﷺ يَقُولُ «هَذَا يَوْمُ عَاشُورَاءَ وَلَمْ يَفْرِضِ اللهُ صِيَامَهُ وَأَنَا صَائِمٌ فَمَنْ أَحَبَّ أَنْ يَصُومَ فَلْيَصُمْ وَمَنْ أَحَبَّ أَنْ يُفْطِرَ فَلْيُفْطِرْ»