Tamim bin Tarafah narrates that Sayyiduna Jabir bin Samurah (may Allah be pleased with him) said: The Messenger of Allah (peace and blessings be upon him) came to us and said: "Will you not form rows the way the angels form rows before their Lord?" The people said: O Messenger of Allah, how do the angels form rows before their Lord? He said: "They complete the front rows and stand close together in the row."
Hadith Referenceالمعجم الكبير للطبراني / باب الجيم / 1798