[Machine] Bilal used to perform the call to prayer when the sun set, but he would not establish the prayer until he saw the Prophet Muhammad ﷺ . Then, when he saw him, he would proceed to establish the prayer.
كَانَ بِلَالٌ يُؤَذِّنُ إِذَا دَحَضَتِ الشَّمْسُ ثُمَّ لَا يُقِيمُ حَتَّى يَرَى النَّبِيَّ ﷺ فَإِذَا رَآهُ أَقَامَ حِينَ يَرَاهُ