Jabir bin Samurah (May Allah be pleased with them) reported

The Messenger of Allah (ﷺ) came out to us (once) and said, "Why do you not stand in rows as the angels do before their Rubb?" We asked: "O Messenger of Allah! how do the angels stand in rows before their Rubb?" He (ﷺ) replied, "They complete each row beginning with the first and filling all the gaps."

[Muslim].