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

(681) For him are angels ranged before him and behind him, who guard him by Allah's command. Lo! Allah changeth not the condition of a folk until they (first) change that which is in their hearts; and if Allah willeth misfortune for a folk there is none that can repel it, nor have they a defender beside Him.

(682) Unto Him is the real prayer. Those unto whom they pray beside Allah respond to them not at all, save as (is the response to) one who stretcheth forth his hands toward water (asking) that it may come unto his mouth, and it will never reach it. The prayer of disbelievers goeth (far) astray.

(683) For those who answered Allah's call is bliss; and for those who answered not His call, if they had all that is in the earth, and therewith the like thereof, they would proffer it as ransom. Such will have a woeful reckoning, and their habitation will be hell, a dire abode.

(684) Such as keep the pact of Allah, and break not the covenant;

(685) Had it been possible for a Lecture to cause the mountains to move, or the earth to be torn asunder, or the dead to speak, (this Qur'an would have done so). Nay, but Allah's is the whole command. Do not those who believe know that, had Allah willed, He could have guided all mankind? As for those who disbelieve, disaster ceaseth not to strike them because of what they do, or it dwelleth near their home until the threat of Allah come to pass. Lo! Allah faileth not to keep the tryst.

(686) Is He Who is aware of the deserts of every soul (as he who is aware of nothing)? Yet they ascribe unto Allah partners. Say: Name them. Is it that ye would inform Him of something which He knoweth not in the earth? Or is it but a way of speaking? Nay but their contrivance is made seeming fair for those who disbelieve and they are kept from the right road. He whom Allah sendeth astray, for him there is no guide.

(687) And verily We sent messengers (to mankind) before thee, and We appointed for them wives and offspring, and it was not (given) to any messenger that he should bring a portent save by Allah's leave. For everything there is a time prescribed.

(688) See they not how we aim to the land, reducing it of its outlying parts? (When) Allah doometh there is none that can postpone His doom, and He is swift at reckoning.

(689) Hath not the history of those before you reached you: the folk of Noah, and (the tribes of) A'ad and Thamud, and those after them? None save Allah knoweth them. Their messengers came unto them with clear proofs, but they thrust their hands into their mouths, and said: Lo! we disbelieve in that wherewith ye have been sent, and lo! we are in grave doubt concerning that to which ye call us.

(690) Their messengers said unto them: We are but mortals like you, but Allah giveth grace unto whom He will of His slaves. It is not ours to bring you a warrant unless by the permission of Allah. In Allah let believers put their trust!