It wasnarrated that Silah bin Zufar said:
"We were with 'Ammar ontheday concerning which there was some doubt. A (roasted) sheep wasbrought and some of the people moved away. 'Ammar said: 'Whoeverisfasting on this day has disobeyed Abu Qasim (ﷺ).'"
English reference: Vol. 1, Book 7, Hadith 1645
Arabic reference: Book 7, Hadith 1714