عَنْ أَبِي قَيْسٍ مَوْلَى عَمْرِو بْنِ الْعَاصِ أَنَّ عَمْرَو بْنَ الْعَاصِ رَضِيَ اللَّهُ عَنْهُ كَانَ يَسْرُدُ الصَّوْمَ وَقَلَّمَا يُصِيبُ مِنَ الْعَشَاءِ أَوَّلَ اللَّيْلِ أَكْثَرَ مَا كَانَ يُصِيبُ مِنَ السَّحَرِ، قَالَ: وَسَمِعْتُهُ يَقُولُ سَمِعْتُ رَسُولَ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَآلِهِ وَسَلَّمَ يَقُولُ: ((إِنَّ فَصْلًا بَيْنَ صِيَامِنَا وَصِيَامِ أَهْلِ الْكِتَابِ أَكْلَةُ السَّحَرِ))
Abu Qais narrates that Sayyiduna Amr bin Al-Aas (may Allah be pleased with him) used to fast continuously, and he would rarely eat in the early part of the night; the reason for this was that he mostly ate at suhoor. I heard him say that the Messenger of Allah (peace and blessings be upon him) said: The distinction between our fasting and the fasting of the People of the Book is eating suhoor.