(27) باب الإِمَامِ تَعْرِضُ لَهُ الْحَاجَةُ بَعْدَ الإِقَامَةِ
Narrated Anas:
Once the Iqama was pronounced and the Prophet (ﷺ) was talking to a man (in a low voice) in a corner of the mosque and he did not lead the prayer till (some of) the people had slept (dozed in a sitting posture) .
Reference: Sahih al-Bukhari 642
In-book reference: Book 10, Hadith 39
USC-MSA web (English) reference(deprecated numbering scheme): Vol. 1, Book 11, Hadith 615