It was narrated that Jabir bin Samurah said: "The Messenger of Allah (ﷺ) came out to us and said: “Will you not form rows as the angels form rows before their Lord? They said: “How do the angels form rows before their lord? He said: “They complete the first row and fill the gaps in the rows”””"
SahihSahihSahih MuslimBook 10 · Hadith 40