I said the dawn prayer behind the Apostle of ﷺ and heard him reciting: 'Nay. I call to witness the stars, running their courses and setting" (al-Qur'an, lxxxi. 15-16) and Done of us bent his back till he completed prostration.
صَلَّيْتُ خَلْفَ النَّبِيِّ ﷺ الْفَجْرَ فَسَمِعْتُهُ يَقْرَأُ { فَلاَ أُقْسِمُ بِالْخُنَّسِ * الْجَوَارِ الْكُنَّسِ} وَكَانَ لاَ يَحْنِي رَجُلٌ مِنَّا ظَهْرَهُ حَتَّى يَسْتَتِمَّ سَاجِدًا