(18) باب الْبُكَاءِ فِي الصَّلاَةِ
It was narrated from Mutarrif that his father said:
"I came to the Prophet (ﷺ) when he was praying, and there was a sound coming from his chest like the sound of water boiling," meaning, he was weeping. (AR)
Reference (AR): Sunan an-Nasa'i 1214 (AR)
In-book reference (AR): Book 13, Hadith 36 (AR)
English translation (AR): Vol. 2, Book 13, Hadith 1215 (AR)