حَدَّثَنَا أَبُو الْوَلِيدِ الطَّيَالِسِيُّ وَسُلَيْمَانُ بْنُ حَرْبٍ قَالَا حَدَّثَنَا شُعْبَةُ عَنْ قَتَادَةَ عَنْ أَنَسٍ قَالَ قَالَ رَسُولُ اللَّهِ صَلَّی اللَّهُ عَلَيْهِ وَسَلَّمَ سَوُّوا صُفُوفَکُمْ فَإِنَّ تَسْوِيَةَ الصَّفِّ مِنْ تَمَامِ الصَّلَاةِ
سنن ابودوٗد · Hadith 668
Anas reported the Messenger of Allah ﷺ as saying: Straighten your rows for the straightening of the rows is part of perfecting the prayer.
Translated by Dr. Muhammad Muhsin Khan · Reviewed by Islamic University of Madinah · Published March 2020