(17) باب التَّنَحْنُحِ فِي الصَّلاَةِ
It was narrated that 'Ali said:
"I had two times when I would enter upon the Messenger of Allah (ﷺ), one at night and one during the day. When I entered at night he would clear his throat (to tell me to come in)." (PT)
Reference (PT): Sunan an-Nasa'i 1212 (PT)
In-book reference (PT): Book 13, Hadith 34 (PT)
English translation (PT): Vol. 2, Book 13, Hadith 1213 (PT)