Arabic (Original)
حَدَّثَنَا وَكِيعٌ حَدَّثَنَا شُعْبَةُ عَنْ قَتَادَةَ عَنْ أَنَسِ بْنِ مَالِكٍ قَالَ قَالَ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ أَقِيمُوا صُفُوفَكُمْ فَإِنَّ مِنْ حُسْنِ الصَّلَاةِ إِقَامَةَ الصَّفِّ.
English Translation
Waki' told us, Shu'bah told us, from Qatadah, from Anas ibn Malik, who said: The Messenger of God, peace and blessings be upon him, said, "Straighten your rows, for straightening the row is part of the perfection of the prayer."