Imam Bukhari narrates: Abu Ma'mar Abdullah bin Amr narrated to us, he said: Abdul Warith narrated to us, he said: Abdul Aziz bin Suhaib narrated to us from Anas, may Allāh be pleased with him, he said that

the Iqamah for prayer was said, at that time the Prophet ﷺ was whispering to a man in a corner of the mosque, then he did not begin the prayer until the people fell asleep.