The word(s) "enlightenment" appears 6 time(s) in 6 verse(s) in Quran in Abdullah Yusuf Ali translation.

(1) Then if they reject thee, so were rejected messengers before thee, who came with Clear Signs, Books of dark prophecies, and the Book of enlightenment.

(سورة آل عمران, Aal-i-Imraan, Chapter #3, Verse #184)
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(2) Yet there is among men such a one as disputes about Allah, without Knowledge, without Guidance, and without a Book of enlightenment,-

(سورة الحج, Al-Hajj, Chapter #22, Verse #8)
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(3) Say: See ye? If Allah were to make the night perpetual over you to the Day of Judgment, what god is there other than Allah, who can give you enlightenment? Will ye not then hearken?

(سورة القصص, Al-Qasas, Chapter #28, Verse #71)
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(4) And if they reject thee, so did their predecessors, to whom came their messengers with Clear Signs, Books of dark prophecies, and the Book of enlightenment.

(سورة فاطر, Faatir, Chapter #35, Verse #25)
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(5) Is one whose heart Allah has opened to Islam, so that he has received enlightenment from Allah, (no better than one hard-hearted)? Woe to those whose hearts are hardened against celebrating the praises of Allah! they are manifestly wandering (in error)!

(سورة الزمر, Az-Zumar, Chapter #39, Verse #22)
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(6) And its enlightenment as to its wrong and its right;-

(سورة الشمس, Ash-Shams, Chapter #91, Verse #8)
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