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

(41) And the Jews say the Christians follow nothing (true), and the Christians say the Jews follow nothing (true); yet both are readers of the Scripture. Even thus speak those who know not. Allah will judge between them on the Day of Resurrection concerning that wherein they differ.

(42) And those who have no knowledge say: Why doth not Allah speak unto us, or some sign come unto us? Even thus, as they now speak, spake those (who were) before them. Their hearts are all alike. We have made clear the revelations for people who are sure.

(43) Lo! We have sent thee (O Muhammad) with the truth, a bringer of glad tidings and a warner. And thou wilt not be asked about the owners of hell-fire.

(44) And the Jews will not be pleased with thee, nor will the Christians, till thou follow their creed. Say: Lo! the guidance of Allah (Himself) is Guidance. And if thou shouldst follow their desires after the knowledge which hath come unto thee, then wouldst thou have from Allah no protecting guardian nor helper.

(45) And guard (yourselves) against a day when no soul will in aught avail another, nor will compensation be accepted from it, nor will intercession be of use to it; nor will they be helped.

(46) And (remember) when his Lord tried Abraham with (His) commands, and he fulfilled them, He said: Lo! I have appointed thee a leader for mankind. (Abraham) said: And of my offspring (will there be leaders)? He said: My covenant includeth not wrong-doers.

(47) The same did Abraham enjoin upon his sons, and also Jacob, (saying): O my sons! Lo! Allah hath chosen for you the (true) religion; therefore die not save as men who have surrendered (unto Him).

(48) Those are a people who have passed away. Theirs is that which they earned, and yours is that which ye earn. And ye will not be asked of what they used to do.

(49) And they say: Be Jews or Christians, then ye will be rightly guided. Say (unto them, O Muhammad): Nay, but (we follow) the religion of Abraham, the upright, and he was not of the idolaters.

(50) Or say ye that Abraham, and Ishmael, and Isaac, and Jacob, and the tribes were Jews or Christians? Say: Do ye know best, or doth Allah? And who is more unjust than he who hideth a testimony which he hath received from Allah? Allah is not unaware of what ye do.