question #3 Sahih Muslim 605b, Book 5, Hadith 202 : How should the congregation respond when the Imam gestures to maintain their positions during prayer?

Iqama was pronounced. ant the people had formed themselves into rows. The Messenger of Allah (ﷺ) came out and stood at his place, and then pointed out with his hand that we should stand at our places. He then went away and took a bath and water trickled from his head and then led them in prayer.