The word(s) "used" appears 281 time(s) in 264 verse(s) in Quran in Mohsin Khan translation.

(41) For them will be the home of peace (Paradise) with their Lord. And He will be their Wali (Helper and Protector) because of what they used to do.

(42) And thus We do make the Zalimun (polytheists and wrong-doers) Auliya' (supporters and helpers) of one another (in committing crimes), because of that which they used to earn.

(43) And according to their claim, they say that such and such cattle and crops are forbidden, and none should eat of them except those whom we allow. And (they say) there are cattle forbidden to be used for burden (or any other work), and cattle on which (at slaughtering) the Name of Allah is not pronounced; lying against Him (Allah). He will recompense them for what they used to fabricate.

(44) Verily, those who divide their religion and break up into sects (all kinds of religious sects) , you (O Muhammad صلى الله عليه وسلم) have no concern in them in the least. Their affair is only with Allah, Who then will tell them what they used to do.

(45) And surely, We created you (your father Adam) and then gave you shape (the noble shape of a human being); then We told the angels, "Prostrate yourselves to Adam", and they prostrated themselves, except Iblis (Satan), he refused to be of those who prostrated themselves.

(46) Who is more unjust than one who invents a lie against Allah or rejects His Ayat (proofs, evidence, verses, lessons, signs, revelations)? For such their appointed portion (good things of this worldly life and their period of stay therein) will reach them from the Book (of Decrees) until when Our Messengers (the angel of death and his assistants) come to them to take their souls, they (the angels) will say: "Where are those whom you used to invoke and worship besides Allah," they will reply, "They have vanished and deserted us." And they will bear witness against themselves, that they were disbelievers.

(47) The first of them will say to the last of them: "You were not better than us, so taste the torment for what you used to earn."

(48) And We shall remove from their breasts any (mutual) hatred or sense of injury (which they had, if at all, in the life of this world); rivers flowing under them, and they will say: "All the praises and thanks be to Allah, Who has guided us to this, and never could we have found guidance, were it not that Allah had guided us! Indeed, the Messengers of our Lord did come with the truth." And it will be cried out to them: "This is the Paradise which you have inherited for what you used to do."

(49) "Who took their religion as an amusement and play, and the life of the world deceived them." So this Day We shall forget them as they forgot their meeting of this Day, and as they used to reject Our Ayat (proofs, evidence, verses, lessons, signs, revelations).

(50) Await they just for the final fullfilment of the event? On the Day the event is finally fulfilled (i.e. the Day of Resurrection), those who neglected it before will say: "Verily, the Messengers of our Lord did come with the truth, now are there any intercessors for us that they might intercede on our behalf? Or could we be sent back (to the first life of the world) so that we might do (good) deeds other than those (evil) deeds which we used to do?" Verily, they have lost their ownselves (i.e. destroyed themselves) and that which they used to fabricate (invoking and worshipping others besides Allah) has gone away from them.