The word(s) "lower" appears 81 time(s) in 80 verse(s) in Quran in Muhammad Habib Shakir translation.

(71) So that the followers of the Book may know that they do not control aught of the grace of Allah, and that grace is in Allah's hand, He gives it to whom He pleases; and Allah is the Lord of mighty grace.

(72) He it is Who caused those who disbelieved of the followers of the Book to go forth from their homes at the first banishment you did not think that they would go forth, while they were certain that their fortresses would defend them against Allah; but Allah came to them whence they did not expect, and cast terror into their hearts; they demolished their houses with their own hands and the hands of the believers; therefore take a lesson, O you who have eyes!

(73) Have you not seen those who have become hypocrites? They say to those of their brethren who disbelieve from among the followers of the Book: If you are driven forth, we shall certainly go forth with you, and we will never obey any one concerning you, and if you are fought against, we will certainly help you, and Allah bears witness that they are most surely liars.

(74) And certainly We have adorned this lower heaven with lamps and We have made these missiles for the Shaitans, and We have prepared for them the chastisement of burning.

(75) Surely your Lord best knows him who errs from His way, and He best knows the followers of the right course.

(76) Then he went to his followers, walking away in haughtiness.

(77) And when they returned to their own followers they returned exulting.

(78) Surely he was (erstwhile) joyful among his followers.

(79) Those who disbelieved from among the followers of the Book and the polytheists could not have separated (from the faithful) until there had come to them the clear evidence:

(80) Surely those who disbelieve from among the followers of the Book and the polytheists shall be in the fire of hell, abiding therein; they are the worst of men.