أَخْبَرَنَا عَلِيُّ بْنُ خَشْرَمٍ الْمَرْوَزِيُّ قَالَ أَنْبَأَنَا عِيسَی وَهُوَ ابْنُ يُونُسَ عَنْ الْأَعْمَشِ عَنْ عُمَارَةَ عَنْ أَبِي مَعْمَرٍ عَنْ أَبِي مَسْعُودٍ قَالَ قَالَ رَسُولُ اللَّهِ صَلَّی اللَّهُ عَلَيْهِ وَسَلَّمَ لَا تُجْزِئُ صَلَاةٌ لَا يُقِيمُ الرَّجُلُ فِيهَا صُلْبَهُ فِي الرُّکُوعِ وَالسُّجُودِ
سنن نسائی · Hadith 1116
It was narrated that Abu Ma’sud said: “The Messenger of Allah صلی اللہ علیہ وآلہ وسلم said: ‘No prayer is valid in which a man does not maintain his back (at ease) when bowing and prostrating.” (Sahih)
Translated by Dr. Muhammad Muhsin Khan · Reviewed by Islamic University of Madinah · Published March 2020