صحيح ابن خزيمه
Sahih Ibn Khuzaymah
جماع أبواب الأذان والإقامةChapters on Adhan and Iqamah
(149) بَابُ ذِكْرِ الْبَيَانِ أَنَّ صَلَاةَ مَنْ لَا يُقِيمُ صُلْبَهُ فِي الرُّكُوعِ وَالسُّجُودِ غَيْرُ مُجْزِئَةٍ،Chapter 149: Clarification that prayer is invalid if one does not straighten the back in bowing and prostration
Hadith 593
نا أَبُو مُوسَى مُحَمَّدُ بْنُ الْمُثَنَّى ، وَأَحْمَدُ بْنُ الْمِقْدَامِ ، قَالا : حَدَّثَنَا مُلازِمُ بْنُ عَمْرٍو ، حَدَّثَنِي جَدِّي عَبْدُ اللَّهِ بْنُ بَدْرٍ ، عَنْ عَبْدِ الرَّحْمَنِ بْنِ عَلِيِّ بْنِ شَيْبَانَ ، عَنْ أَبِيهِ عَلِيِّ بْنِ شَيْبَانَ وَكَانَ أَحَدَ الْوَفْدِ ، قَالَ : صَلَّيْنَا خَلْفَ النَّبِيِّ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ ، فَلَمَحَ بِمُؤَخِّرِ عَيْنَيْهِ إِلَى رَجُلٍ لا يُقِيمُ صُلْبَهُ فِي الرُّكُوعِ وَالسُّجُودِ ، فَلَمَّا قَضَى نَبِيُّ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ الصَّلاةَ ، قَالَ : " يَا مَعْشَرَ الْمُسْلِمِينَ ، إِنَّهُ لا صَلاةَ لِمَنْ لا يُقِيمُ صُلْبَهُ فِي الرُّكُوعِ وَالسُّجُودِ " . هَذَا حَدِيثُ أَحْمَدَ بْنِ الْمِقْدَامِ
Hazrat Abdur Rahman bin Ali bin Shaiban narrates from his respected father, Sayyiduna Ali bin Shaiban (may Allah be pleased with him), that he was a member of the delegation (that came to the service of the Noble Prophet, peace and blessings be upon him). He says: We performed prayer behind the Noble Prophet (peace and blessings be upon him), and he glanced with the corner of his eye at a man who was not straightening his back in bowing (ruku) and prostration (sujud). Then, when the Messenger of Allah (peace and blessings be upon him) completed the prayer, he said: "O assembly of Muslims, indeed the prayer of the one who does not straighten his back in bowing and prostration is not valid." This is the hadith of Ahmad bin al-Muqaddam.
