The word(s) "not" appears 1997 time(s) in 1622 verse(s) in Quran in Muhammad Pickthal translation.

(321) Say: Unto whom belongeth whatsoever is in the heavens and the earth? Say: Unto Allah. He hath prescribed for Himself mercy, that He may bring you all together to the Day of Resurrection whereof there is no doubt. Those who ruin their souls will not believe.

(322) Say: Shall I choose for a protecting friend other than Allah, the Originator of the heavens and the earth, Who feedeth and is never fed? Say: I am ordered to be the first to surrender (unto Him). And be not thou (O Muhammad) of the idolaters.

(323) Those unto whom We gave the Scripture recognise (this revelation) as they recognise their sons. Those who ruin their own souls will not believe.

(324) Who doth greater wrong than he who inventeth a lie against Allah or denieth His revelations? Lo! the wrongdoers will not be successful.

(325) Of them are some who listen unto thee, but We have placed upon their hearts veils, lest they should understand, and in their ears a deafness. If they saw every token they would not believe therein; to the point that, when they come unto thee to argue with thee, the disbelievers say: This is naught else than fables of the men of old.

(326) And they forbid (men) from it and avoid it, and they ruin none save themselves, though they perceive not.

(327) If thou couldst see when they are set before the Fire and say: Oh, would that we might return! Then would we not deny the revelations of our Lord but we would be of the believers!

(328) And they say: There is naught save our life of the world, and we shall not be raised (again).

(329) If thou couldst see when they are set before their Lord! He will say: Is not this real? They will say: Yea, verily, by our Lord! He will say: Taste now the retribution for that ye used to disbelieve.

(330) We know well how their talk grieveth thee, though in truth they deny not thee (Muhammad) but evil-doers flout the revelations of Allah.