Caution: Translations of Quran and Ḥadīth may lead to possible misapplications and misinterpretations. This site is intended for students of sacred knowledge that are proficient in comprehending classical Arabic and have a strong foundation in Islamic sciences. Also note that religious injunctions rely on several aspects beyond what one may glean through reading individual aḥādīth.
Qurʾān Bukhārī Muslim Nasāʾī Abū Dāwūd Tirmidhī Ibn Mājah Mālik Aḥmad Dārimī Ḥākim Ibn Ḥibbān Ṭabarānī Nasāʾī's Kubrá Bayhaqī al-Luʾluʾ wa-al-Marjān Ibn Rajab's Fifty Riyāḍ al-Ṣāliḥīn Aḥmad's Zuhd Suyūṭī
ahmad:27026 – ʿAlī b. ʿĀṣim > Khālid b. Dhakwān > Saʾalt al-Rubayyiʿ b. Muʿawwidh Ibn ʿAfrāʾ > Ṣawm ʿĀshūrāʾ

[Machine] The Messenger of Allah ﷺ said on the day of Ashura, "Who among you is fasting today?" They replied, "Some of us are fasting and some are not." He said, "Then complete the rest of your day and send food to those around the city so that they may complete their day."  

أحمد:٢٧٠٢٦ – حَدَّثَنَا عَلِيُّ بْنُ عَاصِمٍ قَالَ أَخْبَرَنَا خَالِدُ بْنُ ذَكْوَانَ قَالَ سَأَلْتُ الرُّبَيِّعَ بِنْتَ مُعَوِّذِ ابْنِ عَفْرَاءَ عَنْ صَوْمِ عَاشُورَاءَ فَقَالَتْ

قَالَ رَسُولُ اللهِ ﷺ يَوْمَ عَاشُورَاءَ مَنْ أَصْبَحَ مِنْكُمْ صَائِمًا؟ قَالَ قَالُوا مِنَّا الصَّائِمُ وَمِنَّا الْمُفْطِرُ قَالَ فَأَتِمُّوا بَقِيَّةَ يَوْمِكُمْ وَأَرْسِلُوا إِلَى مَنْ حَوْلَ الْمَدِينَةِ فَلْيُتِمُّوا بَقِيَّةَيَوْمِهِمْ  

See similar narrations below:

Collected by Nasāʾī, Ibn Mājah
nasai:2320 – ʿAbdullāh b. Aḥmad b. ʿAbdullāh b. Yūnus Abū Ḥaṣīn > ʿAbthar > Ḥuṣayn > al-Shaʿbī

"The Messenger of Allah said on the day of Ashura: Is there anyone among you who has eaten today?' They said: Some of us are fasting and some of us are not.' He said: 'Do not eat for the rest of the day, and send word to the people of Al-Al-Arud telling them not to eat for the rest of the day."'  

النسائي:٢٣٢٠ – أَخْبَرَنَا عَبْدُ اللَّهِ بْنُ أَحْمَدَ بْنِ عَبْدِ اللَّهِ بْنِ يُونُسَ أَبُو حَصِينٍ قَالَ حَدَّثَنَا عَبْثَرٌ قَالَ حَدَّثَنَا حُصَيْنٌ عَنِ الشَّعْبِيِّ عَنْ مُحَمَّدِ بْنِ صَيْفِيٍّ قَالَ

قَالَ رَسُولُ اللَّهِ ﷺ يَوْمَ عَاشُورَاءَ أَمِنْكُمْ أَحَدٌ أَكَلَ الْيَوْمَ فَقَالُوا مِنَّا مَنْ صَامَ وَمِنَّا مَنْ لَمْ يَصُمْ قَالَ فَأَتِمُّوا بَقِيَّةَ يَوْمِكُمْ وَابْعَثُوا إِلَى أَهْلِ الْعَرُوضِ فَلْيُتِمُّوا بَقِيَّةَ يَوْمِهِمْ  

ibnmajah:1735 – Abū Bakr b. Abū Shaybah > Muḥammad b. Fuḍayl > Ḥuṣayn > al-Shaʿbī

“Has anyone among you eaten today?” We said: “Some of us have eaten and some of us have not.” He said: “Complete the rest of your day (i.e., do not eat for the rest of the day), whoever has eaten and whoever has not eaten. And send word to the people of the suburbs to complete the rest of their day.” He was referring to the people of the suburbs around Al-Madinah.  

ابن ماجة:١٧٣٥ – حَدَّثَنَا أَبُو بَكْرِ بْنُ أَبِي شَيْبَةَ حَدَّثَنَا مُحَمَّدُ بْنُ فُضَيْلٍ عَنْ حُصَيْنٍ عَنِ الشَّعْبِيِّ عَنْ مُحَمَّدِ بْنِ صَيْفِيٍّ قَالَ قَالَ

لَنَا رَسُولُ اللَّهِ ﷺ يَوْمَ عَاشُورَاءَ مِنْكُمْ أَحَدٌ طَعِمَ الْيَوْمَ؟ قُلْنَا مِنَّا طَعِمَ وَمِنَّا مَنْ لَمْ يَطْعَمْ قَالَ فَأَتِمُّوا بَقِيَّةَ يَوْمِكُمْ مَنْ كَانَ طَعِمَ وَمَنْ لَمْ يَطْعَمْ فَأَرْسِلُوا إِلَى أَهْلِ الْعَرُوضِ فَلْيُتِمُّوا بَقِيَّةَ يَوْمِهِمْ قَالَ يَعْنِي أَهْلَ الْعَرُوضِ حَوْلَ الْمَدِينَةِ