Hadith on Salat: Complete rows as angels stand before their Lord

Jabir ibn Samurah reported: The Messenger of Allah, peace and blessings be upon him, came out to us and he said, “Be calm in prayer.” Then, the Prophet came out to us another time and he said, “Will you not form your prayer rows as the angels do before their Lord?” We said, “O Messenger of Allah, how do the angels form rows before their Lord?” The Prophet said, “They complete the first rows and fill in the gaps between rows.

Source: Ṣaḥīḥ Muslim 430

Grade: Sahih (authentic) according to Muslim

عَنْ جَابِرِ بْنِ سَمُرَةَ قَالَ خَرَجَ عَلَيْنَا رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ فَقَالَ اسْكُنُوا فِي الصَّلَاةِ ثُمَّ خَرَجَ عَلَيْنَا فَقَالَ أَلَا تَصُفُّونَ كَمَا تَصُفُّ الْمَلَائِكَةُ عِنْدَ رَبِّهَا فَقُلْنَا يَا رَسُولَ اللَّهِ وَكَيْفَ تَصُفُّ الْمَلَائِكَةُ عِنْدَ رَبِّهَا قَالَ يُتِمُّونَ الصُّفُوفَ الْأُوَلَ وَيَتَرَاصُّونَ فِي الصَّفِّ 

430 صحيح مسلم كتاب الصلاة باب الأمر بالسكون في الصلاة والنهي عن الإشارة باليد ورفعها عند السلام