[Machine] The muezzin of the Messenger of Allah ﷺ used to call the Adhan, then he would wait before establishing the prayer until he saw the Messenger of Allah ﷺ coming out, then he would establish it.
كَانَ مُؤَذِّنُ رَسُولِ اللهِ ﷺ يُؤَذِّنُ ثُمَّ يُمْهِلُ فَلَا يُقِيمُ حَتَّى إِذَا رَأَى رَسُولَ اللهِ ﷺ خَرَجَ أَقَامَ حِينَ يَرَاهُ