Hadith 1914
حَدَّثَنَا عَبْدُ اللَّهِ بْنُ سَعِيدٍ الأَشَجُّ مَا لا أُحْصِي غَيْرَ مَرَّةٍ ، حَدَّثَنَا أَبُو خَالِدٍ ، عَنْ عَمْرِو بْنِ قَيْسٍ ، عَنْ أَبِي إِسْحَاقَ ، عَنْ صِلَةَ بْنِ زُفَرَ ، قَالَ : كُنَّا عِنْدَ عَمَّارٍ ، فَأُتِيَ بِشَاةٍ مَصْلِيَّةٍ ، فَقَالَ : كُلُوا ، فَتَنَحَّى بَعْضُ الْقَوْمِ ، فَقَالَ : إِنِّي صَائِمٌ . فَقَالَ عَمَّارٌ : " مَنْ صَامَ الْيَوْمَ الَّذِي يُشَكُّ فِيهِ فَقَدْ عَصَى أَبَا الْقَاسِمِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ "
Hazrat Sila bin Zufar narrates that we were with Sayyiduna Ammar (may Allah be pleased with him) when a roasted goat was brought to him. He said, "Eat." Some people held back. One of them said, "I am fasting." So Sayyiduna Ammar (may Allah be pleased with him) said, "Whoever fasts on the day of doubt has disobeyed Abul Qasim (peace and blessings be upon him)."
Hadith Reference صحيح ابن خزيمه / 1914
Hadith Takhrij صحيح لغيره