Arabic (Original)
أَخْبَرَنَا الْفَضْلُ بْنُ الْحُبَابِ قَالَ حَدَّثَنَا مُسَدَّدُ بْنُ مُسَرْهَدٍ عَنْ مُلَازِمِ بْنِ عَمْرٍو عَنْ عَبْدِ اللَّهِ بْنِ بَدْرٍ عَنْ عَبْدِ الرَّحْمَنِ بْنِ عَلِيِّ بْنِ شَيْبَانَ الْحَنَفِيِّ عَنْ أَبِيهِ وَكَانَ أَحَدَ الْوَفْدِ السِّتَّةِ قَالَ قَدِمْنَا عَلَى رَسُولِ اللَّهِ ﷺ فَصَلَّيْنَا مَعَهُ فَلَمَحَ بِمُؤَخَّرِ عَيْنَيْهِ رَجُلًا لَا يُقِرُّ صُلْبَهُ فِي الرُّكُوعِ وَالسُّجُودِ فَقَالَ «إِنَّهُ لَا صَلَاةَ لِمَنْ لَمْ يُقِمْ صُلْبَهُ»
English Translation
'Abdul-Rahman ibn 'Ali ibn Shaiban al-Hanafi narrated from his father, who was one of the delegation of six: We came to the Messenger of Allah (peace and blessings of Allah be upon him) and prayed with him. He glanced with the back of his eyes at a man who was not straightening his back in bowing and prostration, and said: 'There is no prayer for one who does not straighten his back.'