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
muslim:1127c – [Chain 1] Abū Bakr b. Abū Shaybah > Wakīʿ Wayaḥyá b. Saʿīd al-Qaṭṭān > Sufyān [Chain 2] Muḥammad b. Ḥātim > Yaḥyá b. Saʿīd > Sufyān > Zubayd al-Yāmī > ʿUmārah b. ʿUmayr > Qays b. Sakan

Abu Muhammad, come near and dine. Upon this he said: I am fasting. Thereupon he said: We used to observe fast and then (this practice) was abandoned.  

مسلم:١١٢٧c – وَحَدَّثَنَا أَبُو بَكْرِ بْنُ أَبِي شَيْبَةَ حَدَّثَنَا وَكِيعٌ وَيَحْيَى بْنُ سَعِيدٍ الْقَطَّانُ عَنْ سُفْيَانَ ح وَحَدَّثَنِي مُحَمَّدُ بْنُ حَاتِمٍ وَاللَّفْظُ لَهُ حَدَّثَنَا يَحْيَى بْنُ سَعِيدٍ حَدَّثَنَا سُفْيَانُ حَدَّثَنِي زُبَيْدٌ الْيَامِيُّ عَنْ عُمَارَةَ بْنِ عُمَيْرٍ عَنْ قَيْسِ بْنِ سَكَنٍ أَنَّ الأَشْعَثَ بْنَ قَيْسٍ دَخَلَ عَلَى عَبْدِ اللَّهِ يَوْمَ عَاشُورَاءَ وَهُوَ يَأْكُلُ فَقَالَ

يَا أَبَا مُحَمَّدٍ ادْنُ فَكُلْ قَالَ إِنِّي صَائِمٌ قَالَ كُنَّا نَصُومُهُ ثُمَّ تُرِكَ