The prayer would be called for the Messenger of Allah ﷺ, and the people would take their places before the Prophet ﷺ took his.
حدثنا محمود بن خالد حدثنا الوليد قال قال أبو عمرو ح و حدثنا داود بن رشيد حدثنا الوليد وهذا لفظه عن الأوزاعي عن الزهري عن أبي سلمة
أن الصلاة كانت تقام لرسول الله ﷺ فيأخذ الناس مقامهم قبل أن يأخذ النبي ﷺ
Bukhari narrated it in the Book of Adhan, chapter "When the Imam Says 'Stay in Your Places Until We Return,' Wait for Him," no. 640, from the hadith of Uzai, and Muslim in the Book of Mosques, chapter "When Should People Stand for Prayer?" no. 605, from the hadith of Walid bin Muslim, with the same wording. See also no. 235.