Sahih Muslim , Book 13, Hadith 56 (In-Book) ⓘ
'Amr b. al-'As reported Allah's Messenger as saying: The difference between our fasting and that of the people of the Book is eating shortly before dawn.
حَدَّثَنَا قُتَيْبَةُ بْنُ سَعِيدٍ، حَدَّثَنَا لَيْثٌ، عَنْ مُوسَى بْنِ عُلَىٍّ، عَنْ أَبِيهِ، عَنْ أَبِي قَيْسٍ، مَوْلَى عَمْرِو بْنِ الْعَاصِ عَنْ عَمْرِو بْنِ الْعَاصِ، أَنَّ رَسُولَ اللَّهِ صلى الله عليه وسلم قَالَ " فَصْلُ مَا بَيْنَ صِيَامِنَا وَصِيَامِ أَهْلِ الْكِتَابِ أَكْلَةُ السَّحَرِ " .
also referenced under: Hadith 1096 (Reference) & Book 6, Hadith 2413 (USC-MSA)