Language:
كتاب الصوم
14  
Fasting (Kitab Al-Siyam)
(776)
Chapter: That It Is Disliked To Fast The Day Of Doubt
(10)
باب كَرَاهِيَةِ صَوْمِ يَوْمِ الشَّكِّ
Sunan Abi Dawud 2334

Narrated Ammar:

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).

حَدَّثَنَا 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 صلى الله عليه وسلم ‏.‏
Grade: Sahih (Al-Albani)  صحيح   (الألباني) حكم   :
Reference : Sunan Abi Dawud 2334
In-book reference : Book 14, Hadith 22
English translation : Book 13, Hadith 2327