The word(s) "vain" appears 29 time(s) in 26 verse(s) in Quran in Muhammad Habib Shakir translation.

(1) And they say: None shall enter the garden (or paradise) except he who is a Jew or a Christian. These are their vain desires. Say: Bring your proof if you are truthful.

(2) Allah does not call you to account for what is vain in your oaths, but He will call you to account for what your hearts have earned, and Allah is Forgiving, Forbearing.

(3) Those who remember Allah standing and sitting and lying on their sides and reflect on the creation of the heavens and the earth: Our Lord! Thou hast not created this in vain! Glory be to Thee; save us then from the chastisement of the fire:

(4) And most certainly I will lead them astray and excite in them vain desires, and bid them so that they shall slit the ears of the cattle, and most certainly I will bid them so that they shall alter Allah's creation; and whoever takes the Shaitan for a guardian rather than Allah he indeed shall suffer a manifest loss.

(5) He gives them promises and excites vain desires in them; and the Shaitan does not promise them but to deceive.

(6) (This) shall not be in accordance with your vain desires nor in accordance with the vain desires of the followers of the Book; whoever does evil, he shall be requited with it, and besides Allah he will find for himself neither a guardian nor a helper.

(7) Allah does not call you to account for what is vain in your oaths, but He calls you to account for the making of deliberate oaths; so its expiation is the feeding of ten poor men out of the middling (food) you feed your families with, or their clothing, or the freeing of a neck; but whosoever cannot find (means) then fasting for three days; this is the expiation of your oaths when you swear; and guard your oaths. Thus does Allah make clear to you His communications, that you may be Fateful.

(8) And they do not assign to Allah the attributes due to Him when they say: Allah has not revealed anything to a mortal. Say: Who revealed the Book which Musa brought, a light and a guidance to men, which you make into scattered writings which you show while you conceal much? And you were taught what you did not know, (neither) you nor your fathers. Say: Allah then leave them sporting in their vain discourses.

(9) (As to) these, surely that about which they are shall be brought to naught and that which they do is vain.

(10) Or you should say: Only our fathers associated others (with Allah) before, and we were an offspring after them: Wilt Thou then destroy us for what the vain doers did?