Tafsir of As-Saffat 37:164

And there is not one of us (angels) but has his known place; meaning, each one has his own place in the heavens and in the places of worship, which he does not overstep. Ad-Dahhak said in his Tafsir:

وما منا إﻻ له مقام معلوم

"And there is not one of us (angels) but has his known place;" Masruq used to narrate that A'ishah, may Allah be pleased with her, said, "The Messenger of Allah said:

ما من السماء الدنيا موضع إﻻ عليه ملك ساجد أو قايم

There is no place in the lower heaven without an angel standing or prostrating in it. This is what Allah says:

وما منا إﻻ له مقام معلوم

And there is not one of us (angels) but has his known place (or position).'' It was reported that Ibn Mas`ud said, "In the heavens there is one heaven in which there is no space a hand span wide but there is the forehead or the foot of an angel on it. '' Then he recited:

وما منا إﻻ له مقام معلوم

(And there is not one of us (angels) but has his known place;) Sa`id bin Jubayr similarly said:

وإنا لنحن الصافون