Sahih al-Bukhari 575
Book 9: Times of the Prayers · Narrated by Anas
Arabic
حَدَّثَنَا عَمْرُو بْنُ عَاصِمٍ، قَالَ حَدَّثَنَا هَمَّامٌ، عَنْ قَتَادَةَ، عَنْ أَنَسٍ، أَنَّ زَيْدَ بْنَ ثَابِتٍ، حَدَّثَهُ أَنَّهُمْ، تَسَحَّرُوا مَعَ النَّبِيِّ صلى الله عليه وسلم ثُمَّ قَامُوا إِلَى الصَّلاَةِ. قُلْتُ كَمْ بَيْنَهُمَا قَالَ قَدْرُ خَمْسِينَ أَوْ سِتِّينَ ـ يَعْنِي آيَةً ـ ح.
English translation
Narrated Anas:Zaid bin Thabit said, "We took the "Suhur" (the meal taken before dawn while fasting is observed) with the Prophet (ﷺ) and then stood up for the (morning) prayer." I asked him how long the interval between the two (Suhur and prayer) was. He replied, 'The interval between the two was just sufficient to recite fifty to sixty 'Ayat
Reference: Sahih al-Bukhari 575, Book of Times of the Prayers. English translation by Dr. Muhammad Muhsin Khan.