(10) باب كَرَاهِيَةِ صَوْمِ يَوْمِ الشَّكِّ
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).
Reference: Sunan Abi Dawud 2334
In-book reference: Book 14, Hadith 22
English translation: Book 13, Hadith 2327