[Machine] I heard the Messenger of Allah ﷺ say, "Indeed, this day is the day of Ashura, and Allah has not prescribed fasting for you. So whoever wishes to fast, let them fast, and whoever wishes to break their fast, let them break it." This is the wording of the Hadith narrated by Al-Qa'nabi, and Al-Shafi'i added in his narration, "And I am fasting, so whoever wishes, let them fast, and the rest is the same in meaning."  

سَمِعْتُ رَسُولَ اللهِ ﷺ يَقُولُ إِنَّ هَذَا الْيَوْمَ يَوْمُ عَاشُورَاءَ وَلَمْ يَكْتُبِ اللهُ عَلَيْكُمْ صِيَامَهُ فَمَنْ شَاءَ فَلْيَصُمْ وَمَنْ شَاءَ فَلْيُفْطِرْ هَذَا لَفْظُ حَدِيثِ الْقَعْنَبِيِّ وَزَادَ الشَّافِعِيُّ فِي رِوَايَتِهِ وَأَنَا صَائِمٌ وَمَنْ شَاءٌ فَلْيَصُمْ وَالْبَاقِي بِمَعْنَاهُ