The word(s) "periods" appears 10 time(s) in 10 verse(s) in Quran in Muhammad Habib Shakir translation.

(1) Surely your Lord is Allah, Who created the heavens and the earth in six periods of time, and He is firm in power; He throws the veil of night over the day, which it pursues incessantly; and (He created) the sun and the moon and the stars, made subservient by His command; surely His is the creation and the command; blessed is Allah, the Lord of the worlds.

(2) Surely your Lord is Allah, Who created the heavens and the earth in six periods, and He is firm in power, regulating the affair, there is no intercessor except after His permission; this is Allah, your Lord, therefore serve Him; will you not then mind?

(3) And He it is Who created the heavens and the earth in six periods-- and His dominion (extends) on the water-- that He might manifest to you, which of you is best in action, and if you say, surely you shall be raised up after death, those who disbelieve would certainly say: This is nothing but clear magic.

(4) Who created the heavens and the earth and what is between them in six periods, and He is firmly established on the throne of authority; the Beneficent Allah, so ask respecting it one aware.

(5) Allah is He Who created the heavens and the earth and what is between them in six periods, and He mounted the throne (of authority); you have not besides Him any guardian or any intercessor, will you not then mind?

(6) Say: What! do you indeed disbelieve in Him Who created the earth in two periods, and do you set up equals with Him? That is the Lord of the Worlds.

(7) And He made in it mountains above its surface, and He blessed therein and made therein its foods, in four periods: alike for the seekers.

(8) So He ordained them seven heavens in two periods, and revealed in every heaven its affair; and We adorned the lower heaven with brilliant stars and (made it) to guard; that is the decree of the Mighty, the Knowing.

(9) And certainly We created the heavens and the earth and what is between them in six periods and there touched Us not any fatigue.

(10) 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.