[Machine] "He (referring to the narrator) went to the Messenger of Allah ﷺ and said, 'We prayed behind the Prophet ﷺ and noticed a man who did not properly straighten his back during the bowing and prostration. After the Messenger of Allah ﷺ finished the prayer, he said, 'O Muslims, there is no prayer for the one who does not properly straighten his back during the bowing and prostration.' He also saw a man praying behind the row, so he stood until the man finished, and then the Messenger of Allah ﷺ said, 'Face your prayer, there is no prayer for the one who prays alone behind the row.' Abdul Samad replied, 'Pray alone behind the row.' So he (the Messenger of Allah) said to him, 'Face your prayer, as there is no prayer for the one who prays alone behind the row.'"  

أَنَّهُ خَرَجَ وَافِدًا إِلَى رَسُولِ اللهِ ﷺ قَالَ فَصَلَّيْنَا خَلْفَ النَّبِيِّ ﷺ فَلَمَحَ بِمُؤْخِرِ عَيْنِهِ إِلَى رَجُلٍ لَا يُقِيمُ صُلْبَهُ فِي الرُّكُوعِ وَالسُّجُودِ فَلَمَّا انْصَرَفَ رَسُولُ اللهِ ﷺ قَالَ يَا مَعْشَرَ الْمُسْلِمِينَ إِنَّهُ لَا صَلَاةَ لِمَنْ لَا يُقِيمُ صُلْبَهُ فِي الرُّكُوعِ وَالسُّجُودِ قَالَ وَرَأَى رَجُلًا يُصَلِّي خَلْفَ الصَّفِّ فَوَقَفَ حَتَّى انْصَرَفَ الرَّجُلُ فَقَالَ رَسُولُ اللهِ ﷺ اسْتَقْبِلْ صَلَاتَكَ لَا صَلَاةَ لِرَجُلٍ فَرْدٍ خَلْفَ الصَّفِّ قَالَ عَبْدُ الصَّمَدِ فَرْدًا خَلْفَ الصَّفِّ فَقَالَ لَهُ اسْتَقْبِلْ صَلَاتَكَ فَلَا صَلَاةَ لِفَرْدٍ خَلْفَ الصَّفِّ