Sahih Muslim #2552 · The Book of Fasting

Sahih MuslimZaid b. Thabit
Sahih Muslim · Book 13 · The Book of Fasting
Sahih Muslim · كتاب 13 · كتاب الصيام
We took meal shortly before dawn along with the Messenger of Allah (ﷺ). We then stood up for prayer. I said: How much span of time was there between the two (acts, i. e. taking of Sahri and observing of prayer)? He said (a span of reciting) fifty verses.
حَدَّثَنَا أَبُو بَكْرِ بْنُ أَبِي شَيْبَةَ، حَدَّثَنَا وَكِيعٌ، عَنْ هِشَامٍ، عَنْ قَتَادَةَ، عَنْ أَنَسٍ، عَنْ زَيْدِ بْنِ ثَابِتٍ، - رضى الله
عنه - قَالَ تَسَحَّرْنَا مَعَ رَسُولِ اللَّهِ صلى الله عليه وسلم ثُمَّ قُمْنَا إِلَى الصَّلاَةِ ‏.‏ قُلْتُ كَمْ كَانَ قَدْرُ مَا بَيْنَهُمَا قَالَ خَمْسِينَ آيَةً ‏.‏
Reference : Sahih Muslim 2552In-book reference : Book 13, Hadith 58