حَدَّثَنَا إِبْرَاهِيمُ بْنُ مُحَمَّدِ بْنِ يُوسُفَ الْفِرْيَابِيُّ، حَدَّثَنَا عَبْدُ اللَّهِ بْنُ عُثْمَانَ بْنِ عَطَاءٍ، حَدَّثَنَا طَلْحَةُ بْنُ زَيْدٍ، عَنْ رَاشِدٍ، قَالَ سَمِعْتُ وَابِصَةَ بْنَ مَعْبَدٍ، يَقُولُ رَأَيْتُ رَسُولَ اللَّهِ ـ صلى الله عليه وسلم ـ يُصَلِّي فَكَانَ إِذَا رَكَعَ سَوَّى ظَهْرَهُ حَتَّى لَوْ صُبَّ عَلَيْهِ الْمَاءُ لاَسْتَقَرَّ .
It wasnarrated that Rashid said: “I heard Wabisah bin Ma’bad saying:‘Isaw the Messenger of Allah (PBUH) performing prayer, and when hebowedhe made his back so straight that if water were poured on it, itwould have stayed there.’” Translation Not Available
Book Ref: Sunan Ibn Majah Book 5 Hadith 872
Web Ref: Sunan Ibn Majah Vol 1 Book 5 Hadith 872