وَحَدَّثَنِي ، عَنْ وَحَدَّثَنِي ، عَنْ مَالِك ، أَنَّهُ بَلَغَهُ ، أَنَّ عُمَرَ بْنَ الْخَطَّابِ " أَرْسَلَ إِلَى الْحَارِثِ بْنِ هِشَامٍ أَنَّ غَدًا يَوْمُ عَاشُورَاءَ فَصُمْ ، وَأْمُرْ أَهْلَكَ أَنْ يَصُومُوا "
Imam Malik (may Allah have mercy on him) was informed that Sayyiduna Umar ibn al-Khattab (may Allah be pleased with him) sent a message to Harith ibn Hisham saying: "Tomorrow is the day of Ashura, so fast and order your family to fast as well."