مِشْكَاةُ الْمَصَابِيحِ
Mishkat al-Masabih 599
Prayer
Observing Prayer Early in the Period - Section 1
وَعَن قَتَادَة وَعَن أَنَسٍ: أَنَّ نَبِيَّ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ وَزَيْدَ بْنَ ثَابِتٍ تَسَحَّرَا فَلَمَّا فَرَغَا مِنْ سَحُورِهِمَا قَامَ نَبِيُّ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ إِلَى الصَّلَاةِ فَصَلَّى. قُلْنَا لِأَنَسٍ: كَمْ كَانَ بَيْنَ فَرَاغِهِمَا مِنْ سَحُورِهِمَا وَدُخُولِهِمَا فِي الصَّلَاة؟ قَالَ: قَدْرُ مَا يَقْرَأُ الرَّجُلُ خَمْسِينَ آيَةً. رَوَاهُ البُخَارِيّ
Qatada said on the authority of Anas that the Prophet (ﷺ) and Zaid b Anas had a meal at daybreak, and when they finished their meal God’s prophet got up to pray and performed the prayer. On being asked how long it was between the end of their meal and their beginning to pray Anas replied that it was about os long as a man takes to recite fifty verses. Bukhari transmitted it.
Mishkat al-Masabih, 599صَحِيح (الألباني)