حَدَّثَنَا هَاشِمُ بْنُ الْقَاسِمِ حَدَّثَنَا شُعْبَةُ حَدَّثَنَا الْحَكَمُ عَنْ مِقْسَمٍ عَنِ ابْنِ عَبَّاسٍ قَالَ صَامَ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ يَوْمَ فَتْحِ مَكَّةَ حَتَّى أَتَى قُدَيْدًا فَأُتِيَ بِقَدَحٍ مِنْ لَبَنٍ فَأَفْطَرَ وَأَمَرَ النَّاسَ أَنْ يُفْطِرُوا
مسند امام احمد بن حنبل · Hadith 3279
It was narrated that Ibn Abbas (RA) said: The Messenger of Allah (PBUH) fasted on the day of the conquest of Makkah until he reached Qudaid, then a vessel of milk was brought to him and he broke his fast and instructed the people to break their fast.
Sanad
حَدَّثَنَا هَاشِمُ بْنُ الْقَاسِمِ حَدَّثَنَا شُعْبَةُ حَدَّثَنَا الْحَكَمُ عَنْ مِقْسَمٍ عَنِ ابْنِ عَبَّاسٍ