Sunan Ibn Majah
1645
Sahih+3

It was narrated that Silah bin Zufar said:“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).’”

SahihAl-Albani
SahihMuhammad Fouad Abd al-Baqi