The word(s) "nay" appears 158 time(s) in 149 verse(s) in Quran in Muhammad Habib Shakir translation.

(61) And if you ask them Who is it that sends down water from the clouds, then gives life to the earth with it after its death, they will certainly say, Allah. Say: All praise is due to Allah. nay, most of them do not understand.

(62) nay! those who are unjust follow their low desires without any knowledge; so who can guide him whom Allah makes err? And they shall have no helpers.

(63) This is Allah's creation, but show Me what those besides Him have created. nay, the unjust are in manifest error

(64) And when it is said to them: Follow what Allah has revealed, they say: nay, we follow that on which we found our fathers. What! though the Shaitan calls them to the chastisement of the burning fire!

(65) And if you ask them who created the heavens and the earth, they will certainly say: Allah. Say: (All) praise is due to Allah; nay! most of them do not know.

(66) Or do they say: He has forged it? nay! it is the truth from your Lord that you may warn a people to whom no warner has come before you, that they may follow the right direction.

(67) And they say: What! when we have become lost in the earth, shall we then certainly be in a new creation? nay! they are disbelievers in the meeting of their Lord.

(68) He has forged a lie against Allah or there is madness in him. nay! those who do not believe in the hereafter are in torment and in great error.

(69) Say: Show me those whom you have joined with Him as associates; by no means (can you do it). nay! He is Allah, the Mighty, the Wise.

(70) Those who were proud shall say to those who were deemed weak: Did we turn you away from the guidance after it had come to you? nay, you (yourselves) were guilty