(33) باب الدَّلِيلِ عَلَى أَنَّ نَوْمَ الْجَالِسِ لاَ يَنْقُضُ الْوُضُوءَ
Anas b. Malik reported:
(The people) stood up for prayer and the Messenger of Allah (ﷺ) was talking in whispers with a man, and he did not discontinue the conversation till his Companions dozed off; he then came and led the prayer.
Reference: Sahih Muslim 376 b
In-book reference: Book 3, Hadith 155
USC-MSA web (English) reference(deprecated numbering scheme): Book 3, Hadith 732