(46) باب فِي الصَّلاَةِ تُقَامُ وَلَمْ يَأْتِ الإِمَامُ يَنْتَظِرُونَهُ قُعُودًا
Anas reported :
the Iqamah was pronounced (for the night prayer) and the Messenger of Allah (ﷺ) remained engaged in talking (to a person) in the corner of the mosque. He did not begin prayer until the people slept.
Reference: Sunan Abi Dawud 544
In-book reference: Book 2, Hadith 154
English translation: Book 2, Hadith 544