حَدَّثَنَا مُحَمَّدُ بْنُ الْمِنْهَالِ حَدَّثَنَا يَزِيدُ بْنُ زُرَيْعٍ حَدَّثَنَا سَعِيدٌ عَنْ قَتَادَةَ عَنْ عَبْدِ الرَّحْمَنِ بْنِ مَسْلَمَةَ عَنْ عَمِّهِ أَنَّ أَسْلَمَ أَتَتْ النَّبِيَّ صَلَّی اللَّهُ عَلَيْهِ وَسَلَّمَ فَقَالَ صُمْتُمْ يَوْمَکُمْ هَذَا قَالُوا لَا قَالَ فَأَتِمُّوا بَقِيَّةَ يَوْمِکُمْ وَاقْضُوهُ قَالَ أَبُو دَاوُد يَعْنِي يَوْمَ عَاشُورَائَ
سنن ابودوٗد · Hadith 2447
Narrated Abdur Rahman ibn Maslamah: Abdur Rahman reported on the authority of his uncle that the people of the tribe Aslam came to the Prophet ﷺ. He said (to them): Did you fast on this day? They replied: No. He said: Complete the rest of your day, and make atonement for it.
Translated by Dr. Muhammad Muhsin Khan · Reviewed by Islamic University of Madinah · Published March 2020