ذِكْرُ الْأَمْرِ بِتَسْوِيَةِ الصُّفُوفِ حَذَرَ مُخَالَفَةِ الْوُجُوهِ عِنْدَ تَرْكِهِ
“The Messenger of Allah ﷺ used to straighten the rows until he made them like a spear or an arrow-shaft. Once he saw a man’s chest (sticking out) so the Messenger of Allah ﷺ said: ‘Make your rows straight or Allah will create division among you.’” (Using translation from Ibn Mājah 994)
أَنَّهُ سَمِعَ النُّعْمَانَ بْنَ بَشِيرٍ يَقُولُ كَانَ رَسُولُ اللَّهِ ﷺ يُسَوِّي الصَّفَّ حَتَّى يَجْعَلَهُ مِثْلَ الْقِدْحِ أَوِ الرُّمْحِ فَرَأَى صَدْرَ رَجُلٍ نَاتِئًا فَقَالَ رَسُولُ اللَّهِ ﷺ «عِبَادَ اللَّهِ سَوُّوا صُفُوفَكُمْ أَوْ لَيُخَالِفَنَّ اللَّهُ بَيْنَ وُجُوهِكُمْ»