It is narrated from Sayyida Aisha (may Allah be pleased with her) that the Messenger of Allah (peace and blessings be upon him and his family) used to recite this supplication in bowing and prostration: Subbuhun Quddusun Rabbul-mala’ikati war-ruh. (He is the Most Glorious, Most Holy, Lord of the angels and the Spirit (i.e., Jibreel).)