´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.
Hadith ReferenceSunan an-Nasa'i / The Book of The At-Tatbiq (Clasping One\'s Hands Together) / Hadith: 1107
Hadith Gradingالألبانی:صحيح | زبیر علی زئی:متفق عليه