question #2 Sahih Muslim 605c, Book 5, Hadith 203 : How does the practice of standing in rows before the prayer leader begins enhance the discipline of the congregation?

Abu Salama reported on the authority of Abu Huraira that when Iqama was pronounced for the Messenger of Allah (ﷺ), the people occupied their places in the rows before the Messenger of Allah (way peace be upon him) stood up at his place.