The Book of Fasting
22/21. Chapter:
The Length of time Between Sahur and the Subh Prayer
Sunan an-Nasai
أَخْبَرَنَا إِسْحَاقُ بْنُ إِبْرَاهِيمَ، قَالَ حَدَّثَنَا وَكِيعٌ، قَالَ حَدَّثَنَا هِشَامٌ، عَنْ قَتَادَةَ، عَنْ أَنَسٍ، عَنْ زَيْدِ بْنِ ثَابِتٍ، قَالَ تَسَحَّرْنَا مَعَ رَسُولِ اللَّهِ صلى الله عليه وسلم ثُمَّ قُمْنَا إِلَى الصَّلاَةِ . قُلْتُ كَمْ كَانَ بَيْنَهُمَا قَالَ قَدْرَ مَا يَقْرَأُ الرَّجُلُ خَمْسِينَ آيَةً .
Hisam reported from Qatadah, from Anas, that Zaid bin Thabir said; "We took Sahur with the Messenger of Allah then we went to pray." I said: "How long was there between them?" He said: "As long as it takes a man to recite fifty verses."
Reference : Sunan an-Nasa'i 2155In-book reference : Book 22, Hadith 66English translation : Vol. 3, Book 22, Hadith 2157