Silsilat al-Ahadith al-Sahihah

Lady Aisha (may Allah be pleased with her) narrates that the Messenger of Allah (peace and blessings of Allah be upon him) said: “There is not even a space the size of a footstep in the sky of this world except that there is an angel there, either in prostration or standing (in worship). This is in accordance with the statement of the angels: ‘And there is not one of us but has an assigned place. And verily, we are those who stand in rows. And verily, we are those who glorify (Allah).’” (__QUR_37:164__, __QUR_37:165__, __QUR_37:166__)