Do you not see that Allah makes the night to enter into the day, and He makes the day to enter into the night, and He has made the sun and the moon subservient (to you); each pursues its course till an appointed time; and that Allah is Aware of what you do?

He it is who created the heavens and the earth in six periods, and He is firm in power; He knows that which goes deep down into the earth and that which comes forth out of it, and that which comes down from the heaven and that which goes up into it, and He is with you wherever you are; and Allah sees what you do.