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

(501) Lo! the number of the months with Allah is twelve months by Allah's ordinance in the day that He created the heavens and the earth. Four of them are sacred: that is the right religion. So wrong not yourselves in them. And wage war on all of the idolaters as they are waging war on all of you. And know that Allah is with those who keep their duty (unto Him).

(502) Postponement (of a sacred month) is only an excess of disbelief whereby those who disbelieve are misled; they allow it one year and forbid it (another) year, that they may make up the number of the months which Allah hath hallowed, so that they allow that which Allah hath forbidden. The evil of their deeds is made fairseeming unto them. Allah guideth not the disbelieving folk.

(503) If ye go not forth He will afflict you with a painful doom, and will choose instead of you a folk other than you. Ye cannot harm Him at all. Allah is Able to do all things.

(504) If ye help him not, still Allah helped him when those who disbelieve drove him forth, the second of two; when they two were in the cave, when he said unto his comrade: Grieve not. Lo! Allah is with us. Then Allah caused His peace of reassurance to descend upon him and supported him with hosts ye cannot see, and made the word of those who disbelieved the nethermost, while Allah's Word it was that became the uppermost. Allah is Mighty, Wise.

(505) They alone ask leave of thee who believe not in Allah and the Last Day, and whose hearts feel doubt, so in their doubt they waver.

(506) Of them is he who saith: Grant me leave (to stay at home) and tempt me not. Surely it is into temptation that they (thus) have fallen. Lo! hell verily is all around the disbelievers.

(507) Say: Pay (your contribution), willingly or unwillingly, it will not be accepted from you. Lo! ye were ever froward folk.

(508) And naught preventeth that their contributions should be accepted from them save that they have disbelieved in Allah and in His messenger, and they come not to worship save as idlers, and pay not (their contribution) save reluctantly.

(509) So let not their riches nor their children please thee (O Muhammad). Allah thereby intendeth but to punish them in the life of the world and that their souls shall pass away while they are disbelievers.

(510) And they swear by Allah that they are in truth of you, when they are not of you, but they are folk who are afraid.