Translation:

4. It is Allah Who has created the heavens and the earth and all between them in six Days and is firmly established on the Throne (of authority): ye have none besides Him to protect or intercede (for you): will ye not then receive admonition?

Notes (Tafseer)

3632. Six Days: See n. 1031 to vii. 54. The "Day" does not mean a day as we reckon it, viz., one apparent course of the sun round the earth, for it refers to conditions which began before the earth and the sun were created. In verse 5 below, a Day is compared to a thousand years of our reckoning, and in lxx. 4 to 50,000 years. These figures "as we reckon" have no relation to "timeless Time", and must be taken to mean very long Periods, or Ages, or Aeons. See further xli. 9-12, and notes.

3633. Cf. x. 3. n. 1386. Allah created the World as we see it in six great Stages. But after the initial creation, He is still in authority and directs and controls all affairs. He has not delegated His powers to others, and Himself retired. Also see vii. 54.