Sunan Abu Dawud
544
Sahih+3

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

SahihAl-Albani
SahihMuhammad Muhyi Al-Din Abdul Hamid