Hadith 2166
Chapter 27: The Difference Between our fasting and the Fasting of the people of the Book - كتاب الصيام
أَخْبَرَنَا قُتَيْبَةُ، قَالَ حَدَّثَنَا اللَّيْثُ، عَنْ مُوسَى بْنِ عُلَىٍّ، عَنْ أَبِيهِ، عَنْ أَبِي قَيْسٍ، عَنْ عَمْرِو بْنِ الْعَاصِ، قَالَ قَالَ رَسُولُ اللَّهِ صلى الله عليه وسلم " إِنَّ فَصْلَ مَا بَيْنَ صِيَامِنَا وَصِيَامِ أَهْلِ الْكِتَابِ أَكْلَةُ السُّحُورِ " .
It was narrated that 'Amr bin Al-As said:
"The Messenger of Allah said: 'The difference between our fasting and the fasting of the people of the Book, is eating Sahur."' '
Reference : Sunan an-Nasa'i 2166
In-book reference : Book 22, Hadith 77