1139. hadíth
قَالَ وَقَالَ رَسُولُ اَللَّهِ صَلَّى اَللَّهُ عَلَيْهِ وَ آلِهِ: «أَقِيمُوا صُفُوفَكُمْ فَإِنِّي أَرَاكُمْ مِنْ خَلْفِي كَمَا أَرَاكُمْ مِنْ قُدَّامِي وَ مِنْ بَيْنِ يَدَيَّ وَ لاَ تُخَالِفُوا فَيُخَالِفَ اَللَّهُ بَيْنَ قُلُوبِكُمْ.
The Messenger of Allah (saws) said: "Straighten your rows, for I see you from behind me just as I see you from in front of me and from before me. Do not differ, lest Allah (swt) cause discord among your hearts."