(37) باب صِيَامِ يَوْمِ الشَّكِّ
It was narrated that Silah said:
"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."' ' (ES)
Reference (ES): Sunan an-Nasa'i 2188 (ES)
In-book reference (ES): Book 22, Hadith 99 (ES)
English translation (ES): Vol. 3, Book 22, Hadith 2190 (ES)