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.
abudawud:2334Muḥammad b. ʿAbdullāh b. Numayr > Abū Khālid al-Aḥmar > ʿAmr b. Qays > Abū Isḥāq > Ṣilah

AbuIshaq reported on the authority of Silah: We were with Ammar on the day when the appearance of the moon was doubtful. (The meat of) goat was brought to him. Some people kept aloof from (eating) it. Ammar said: He who keeps fast on this day disobeys AbulQasim (i.e. the Prophet) ﷺ.  

أبو داود:٢٣٣٤حَدَّثَنَا مُحَمَّدُ بْنُ عَبْدِ اللَّهِ بْنِ نُمَيْرٍ حَدَّثَنَا أَبُو خَالِدٍ الأَحْمَرُ عَنْ عَمْرِو بْنِ قَيْسٍ عَنْ أَبِي إِسْحَاقَ عَنْ صِلَةَ قَالَ

كُنَّا عِنْدَ عَمَّارٍ فِي الْيَوْمِ الَّذِي يُشَكُّ فِيهِ فَأُتِيَ بِشَاةٍ فَتَنَحَّى بَعْضُ الْقَوْمِ فَقَالَ عَمَّارٌ مَنْ صَامَ هَذَا الْيَوْمَ فَقَدْ عَصَى أَبَا الْقَاسِمِ ﷺ  


See similar narrations below:

Collected by Nasāʾī, Ibn Mājah
nasai:2188ʿAbdullāh b. Saʿīd al-Ashaj > Abū Khālid > ʿAmr b. Qays > Abū Isḥāq > Ṣilah

"We were with 'Ammar and a roast sheep was brought and he said: 'Eat.' One of the people turned away and said: 'I am fasting 'Ammar said: Whoever fasts on the day concerning which there is doubt, has disobeyed Abu Al-Qasim."' '  

النسائي:٢١٨٨أَخْبَرَنَا عَبْدُ اللَّهِ بْنُ سَعِيدٍ الأَشَجُّ عَنْ أَبِي خَالِدٍ عَنْ عَمْرِو بْنِ قَيْسٍ عَنْ أَبِي إِسْحَاقَ عَنْ صِلَةَ قَالَ

كُنَّا عِنْدَ عَمَّارٍ فَأُتِيَ بِشَاةٍ مَصْلِيَّةٍ فَقَالَ كُلُوا فَتَنَحَّى بَعْضُ الْقَوْمِ قَالَ إِنِّي صَائِمٌ فَقَالَ عَمَّارٌ مَنْ صَامَ الْيَوْمَ الَّذِي يُشَكُّ فِيهِ فَقَدْ عَصَى أَبَا الْقَاسِمِ ﷺ  

ibnmajah:1645Muḥammad b. ʿAbdullāh b. Numayr > Abū Khālid al-Aḥmar > ʿAmr b. Qays > Abū Isḥāq > Ṣilah b. Zufar

“We were with ‘Ammar on the day concerning which there was some doubt. A (roasted) sheep was brought and some of the people moved away. ‘Ammar said: ‘Whoever is fasting on this day has disobeyed Abu Qasim ﷺ.’”  

ابن ماجة:١٦٤٥حَدَّثَنَا مُحَمَّدُ بْنُ عَبْدِ اللَّهِ بْنِ نُمَيْرٍ حَدَّثَنَا أَبُو خَالِدٍ الأَحْمَرُ عَنْ عَمْرِو بْنِ قَيْسٍ عَنْ أَبِي إِسْحَاقَ عَنْ صِلَةَ بْنِ زُفَرَ قَالَ

كُنَّا عِنْدَ عَمَّارٍ فِي الْيَوْمِ الَّذِي يُشَكُّ فِيهِ فَأُتِيَ بِشَاةٍ فَتَنَحَّى بَعْضُ الْقَوْمِ فَقَالَ عَمَّارٌ مَنْ صَامَ هَذَا الْيَوْمَ فَقَدْ عَصَى أَبَا الْقَاسِمِ ﷺ