حَدَّثَنَا أَبُو بَكْرِ بْنُ أَبِي شَيْبَةَ، حَدَّثَنَا مُلاَزِمُ بْنُ عَمْرٍو، عَنْ عَبْدِ اللَّهِ بْنِ بَدْرٍ، أَخْبَرَنِي عَبْدُ الرَّحْمَنِ بْنُ عَلِيِّ بْنِ شَيْبَانَ، عَنْ أَبِيهِ، . عَلِيِّ بْنِ شَيْبَانَ - وَكَانَ مِنَ الْوَفْدِ - قَالَ خَرَجْنَا حَتَّى قَدِمْنَا عَلَى رَسُولِ اللَّهِ ـ صلى الله عليه وسلم ـ فَبَايَعْنَاهُ وَصَلَّيْنَا خَلْفَهُ فَلَمَحَ بِمُؤْخِرِ عَيْنِهِ رَجُلاً لاَ يُقِيمُ صَلاَتَهُ - يَعْنِي صُلْبَهُ - فِي الرُّكُوعِ وَالسُّجُودِ فَلَمَّا قَضَى النَّبِيُّ ـ صلى الله عليه وسلم ـ الصَّلاَةَ قَالَ " يَا مَعْشَرَ الْمُسْلِمِينَ لاَ صَلاَةَ لِمَنْ لاَ يُقِيمُ صُلْبَهُ فِي الرُّكُوعِ وَالسُّجُودِ " .
It wasnarrated that ‘Ali bin Shaiban who was part of a delegation(to theProphet (PBUH)) said: “We set out until we came to theMessenger ofAllah (PBUH), and we gave him our oath of allegiance andperformedprayer behind him. He glanced out of the corner of his eyeat a manwho was not settling his spine when he bowed and prostrated.When theProphet (PBUH) finished the prayer, he said: ‘O Muslims, thereis noprayer for the one who does not settle his spine when bowing andprostrating.’” Translation Not Available
Book Ref: Sunan Ibn Majah Book 5 Hadith 871
Web Ref: Sunan Ibn Majah Vol 1 Book 5 Hadith 871