(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. (ID)
Reference (ID): Sunan an-Nasa'i 1106 (ID)
In-book reference (ID): Book 12, Hadith 78 (ID)
English translation (ID): Vol. 2, Book 12, Hadith 1107 (ID)