The word(s) "vanity" appears 5 time(s) in 5 verse(s) in Quran in Abdullah Yusuf Ali translation.

(1) He sends down water from the skies, and the channels flow, each according to its measure: But the torrent bears away to foam that mounts up to the surface. Even so, from that (ore) which they heat in the fire, to make ornaments or utensils therewith, there is a scum likewise. Thus doth Allah (by parables) show forth Truth and vanity. For the scum disappears like forth cast out; while that which is for the good of mankind remains on the earth. Thus doth Allah set forth parables.

(سورة الرعد, Ar-Ra'd, Chapter #13, Verse #17)
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(2) Never did We send a messenger or a prophet before thee, but, when he framed a desire, Satan threw some (vanity) into his desire: but Allah will cancel anything (vain) that Satan throws in, and Allah will confirm (and establish) His Signs: for Allah is full of Knowledge and Wisdom:

(سورة الحج, Al-Hajj, Chapter #22, Verse #52)
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(3) What! Do they say, "He has forged a falsehood against Allah"? But if Allah willed, He could seal up thy heart. And Allah blots out vanity, and proves the Truth by His Words. For He knows well the secrets of all hearts.

(سورة الشورى, Ash-Shura, Chapter #42, Verse #24)
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(4) No vanity shall they hear therein, nor Untruth:-

(سورة النبإ, An-Naba, Chapter #78, Verse #35)
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(5) Where they shall hear no (word) of vanity:

(سورة الغاشية, Al-Ghaashiya, Chapter #88, Verse #11)
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