The word(s) "nay" appears 143 time(s) in 137 verse(s) in Quran in Mohsin Khan translation.

(11) Have you not seen those (Jews and Christians) who claim sanctity for themselves. nay, but Allah sanctifies whom He wills, and they will not be dealt with injustice even equal to the extent of a scalish thread in the long slit of a date-stone.

(12) Because of their breaking the covenant, and of their rejecting the Ayat (proofs, evidence, verses, lessons, signs, revelations, etc.) of Allah, and of their killing the Prophets unjustly, and of their saying: "Our hearts are wrapped (with coverings, i.e. we do not understand what the Messengers say)" - nay, Allah has set a seal upon their hearts because of their disbelief, so they believe not but a little.

(13) And (both) the Jews and the Christians say: "We are the children of Allah and His loved ones." Say: "Why then does He punish you for your sins?" nay, you are but human beings of those He has created, He forgives whom He wills and He punishes whom He wills. And to Allah belongs the dominion of the heavens and the earth and all that is between them; and to Him is the return (of all).

(14) The Jews say: "Allah's Hand is tied up (i.e. He does not give and spend of His Bounty)." Be their hands tied up and be they accursed for what they uttered. nay, both His Hands are widely outstretched. He spends (of His Bounty) as He wills. Verily, the Revelation that has come to you from your Lord (Allah) increases in most of them (their) obstinate rebellion and disbelief. We have put enmity and hatred amongst them till the Day of Resurrection. Every time they kindled the fire of war, Allah extinguished it; and they (ever) strive to make mischief on the earth. And Allah does not like the Mufsidun (mischief-makers).

(15) nay, it has become manifest to them what they had been concealing before. But if they were returned (to the world), they would certainly revert to that which they were forbidden. And indeed they are liars.

(16) nay! To Him Alone you would call, and, if He wills, He would remove that (distress) for which you call upon Him, and you would forget at that time whatever partners you joined (with Him in worship)!

(17) And when they commit a Fahishah (evil deed, going round the Ka'bah in naked state, and every kind of unlawful sexual intercourse), they say: "We found our fathers doing it, and Allah has commanded it on us." Say: "nay, Allah never commands Fahishah. Do you say of Allah what you know not?"

(18) "Verily, you practise your lusts on men instead of women. nay, but you are a people transgressing beyond bounds (by committing great sins)."

(19) And surely, We have created many of the jinn and mankind for Hell. They have hearts wherewith they understand not, and they have eyes wherewith they see not, and they have ears wherewith they hear not (the truth). They are like cattle, nay even more astray; those! They are the heedless ones.

(20) nay, they have belied the knowledge whereof they could not comprehend and what has not yet been fulfilled (i.e. their punishment). Thus those before them did belie. Then see what was the end of the Zalimun (polytheists and wrong-doers)!