The Messenger of Allah ﷺ came to us and said: "How is it that I see you lifting your hands like the tails of headstrong horses? Be calm in prayer." He (the narrator) said: He then again came to us and saw us (sitting) in circles. He said: "How is it that I see you in separate groups?" He (the narrator) said: He again came to us and said: "Why don't you draw yourselves up in rows as angels do in the presence of their Lord?" We said: Messenger of Allah, how do the angels draw themselves up in rows in the presence of their Lord? He (the Holy Prophet) said: "They make the first rows complete and keep close together in the row." (Using translation from Muslim 430a)
خَرَجَ عَلَيْنَا رَسُولُ اللهِ ﷺ ذَاتَ يَوْمٍ فَقَالَ مَا لِي أَرَاكُمْ رَافِعِي أَيْدِيكُمْ كَأَنَّهَا أَذْنَابُ خَيْلٍ شُمْسٍ اسْكُنُوا فِي الصَّلَاةِ ثُمَّ خَرَجَ عَلَيْنَا فَرَآنَا حِلَقًا فَقَالَ مَا لِي أَرَاكُمْ عِزِينَ ثُمَّ خَرَجَ عَلَيْنَا فَقَالَ أَلَا تَصُفُّونَ كَمَا تَصُفُّ الْمَلَائِكَةُ عِنْدَ رَبِّهَا؟ قَالَ قَالُوا يَا رَسُولَ اللهِ وَكَيْفَ تَصُفُّ الْمَلَائِكَةُ عِنْدَ رَبِّهَا؟ قَالَ يُتِمُّونَ الصُّفُوفَ الْأُولَى وَيَتَرَاصُّونَ فِي الصَّفِّ