The Messenger of Allah ﷺ said, "Will you not line up in rows as the angels line up before their Lord?"We asked, "Messenger of Allah, how do the angels line up before their Lord?"He replied, "They complete the front rows first, and they stand closely packed together in each row."
قال رسول الله ﷺ: ألا تصفون كما تصف الملائكة عند ربها؟ فقلنا: يا رسول الله، وكيف تصف الملائكة عند ربها؟ قال: يتمون الصفوف الأول، ويتراصون في الصف.
Muslim reported it in the Book of Prayer (430) through several routes from Abu Muawiya, from Amash, from Musayab bin Rafi, from Tamim bin Tarafa, from Jabir bin Samura, who said, and then he related it.