The word(s) "not" appears 2535 time(s) in 1947 verse(s) in Quran in Mohsin Khan translation.

(801) And they swear by Allah their strongest oaths, that Allah will not raise up him who dies. Yes, (He will raise them up), - a promise (binding) upon Him in truth, but most of mankind know not.

(802) And We sent not (as Our Messengers) before you (O Muhammad صلى الله عليه و سلم) any but men, whom We sent revelation, (to preach and invite mankind to believe in the Oneness of Allah). So ask (you, O pagans of Makkah) of those who know the Scripture [learned men of the Taurat (Torah) and the Injeel (Gospel)], if you know not.

(803) Do then those who devise evil plots feel secure that Allah will not sink them into the earth, or that the torment will not seize them from directions they perceive not?

(804) Have they not observed things that Allah has created: (how) their shadows incline to the right and to the left, making prostration unto Allah, and they are lowly?

(805) And to Allah prostrate all that is in the heavens and all that is in the earth, of the moving (living) creatures and the angels, and they are not proud [i.e. they worship their Lord (Allah) with humility].

(806) And Allah said (O mankind!): "Take not ilahain (two gods in worship). Verily, He (Allah) is (the) only One Ilah (God). Then, fear Me (Allah جل جلاله) much [and Me (Alone), i.e. be away from all kinds of sins and evil deeds that Allah has forbidden and do all that Allah has ordained and worship none but Allah] .

(807) And they assign a portion of that which We have provided them unto what they know not (false deities). By Allah, you shall certainly be questioned about (all) that you used to fabricate.

(808) For those who believe not in the Hereafter is an evil description, and for Allah is the highest description. And He is the All-Mighty, the All-Wise.

(809) And if Allah were to seize mankind for their wrong-doing, He would not leave on it (the earth) a single moving (living) creature, but He postpones them for an appointed term and when their term comes, neither can they delay nor can they advance it an hour (or a moment).

(810) And We have not sent down the Book (the Qur'an) to you (O Muhammad صلى الله عليه و سلم), except that you may explain clearly unto them those things in which they differ, and (as) a guidance and a mercy for a folk who believe.