(51) باب صِفَةِ السُّجُودِ
It was narrated from Abdullah bin Malik bin Buhainah that:
When the Messenger of Allah (ﷺ) prayed he held his arms out so much that the whiteness of his armpits appeared.
Reference: Sunan an-Nasa'i 1106
In-book reference: Book 12, Hadith 78
English translation: Vol. 2, Book 12, Hadith 1107