(51) باب صِفَةِ السُّجُودِ
It was narrated that Abu Hurairah said:
"If I were in front of the Messenger of Allah (ﷺ) I would be able to see the whiteness of his armpits." (One of the narrators) Abu Mijlaz said: "It is as if he said that because he was praying." (RU)
Reference (RU): Sunan an-Nasa'i 1107 (RU)
In-book reference (RU): Book 12, Hadith 79 (RU)
English translation (RU): Vol. 2, Book 12, Hadith 1108 (RU)