Riyad as-Salihin 1426
'Aishah (May Allah be pleased with her) reported:
The Messenger of Allah (ﷺ) used to recite in his bowing and prostration: "Subbuhun Quddusun, Rabbul-mala'ikati war-ruh [You are the Most Glorious. The Most Holy. You the Rubb of the angels and of Jibril [Muslim] .
وعنها أن رسول الله صلى الله عليه وسلم كان يقول في ركوعه وسجوده‏:‏ ‏
"‏سبوح قدوس رب الملائكة والروح‏"‏ ‏(‏‏(‏رواه مسلم‏)‏‏)‏‏.‏