The word(s) "nay" appears 129 time(s) in 124 verse(s) in Quran in Abdullah Yusuf Ali translation.

(21) (Both) the Jews and the Christians say: "We are sons of Allah, and his beloved." Say: "Why then doth He punish you for your sins? nay, ye are but men,- of the men he hath created: He forgiveth whom He pleaseth, and He punisheth whom He pleaseth: and to Allah belongeth the dominion of the heavens and the earth, and all that is between: and unto Him is the final goal (of all)"

(22) The Jews say: "Allah's hand is tied up." Be their hands tied up and be they accursed for the (blasphemy) they utter. nay, both His hands are widely outstretched: He giveth and spendeth (of His bounty) as He pleaseth. But the revelation that cometh to thee from Allah increaseth in most of them their obstinate rebellion and blasphemy. Amongst them we have placed enmity and hatred till the Day of Judgment. Every time they kindle the fire of war, Allah doth extinguish it; but they (ever) strive to do mischief on earth. And Allah loveth not those who do mischief.

(23) Say: "Shall I take for my protector any other than Allah, the Maker of the heavens and the earth? And He it is that feedeth but is not fed." Say: "nay! but I am commanded to be the first of those who bow to Allah (in Islam), and be not thou of the company of those who join gods with Allah."

(24) Say: "What thing is most weighty in evidence?" Say: "Allah is witness between me and you; This Qur'an hath been revealed to me by inspiration, that I may warn you and all whom it reaches. Can ye possibly bear witness that besides Allah there is another Allah?" Say: "nay! I cannot bear witness!" Say: "But in truth He is the one Allah, and I truly am innocent of (your blasphemy of) joining others with Him."

(25) "nay,- On Him would ye call, and if it be His will, He would remove (the distress) which occasioned your call upon Him, and ye would forget (the false gods) which ye join with Him!"

(26) When they do aught that is shameful, they say: "We found our fathers doing so"; and "Allah commanded us thus": Say: "nay, Allah never commands what is shameful: do ye say of Allah what ye know not?"

(27) Many are the Jinns and men we have made for Hell: They have hearts wherewith they understand not, eyes wherewith they see not, and ears wherewith they hear not. They are like cattle,- nay more misguided: for they are heedless (of warning).

(28) Will ye not fight people who violated their oaths, plotted to expel the Messenger, and took the aggressive by being the first (to assault) you? Do ye fear them? nay, it is Allah Whom ye should more justly fear, if ye believe!

(29) nay, they charge with falsehood that whose knowledge they cannot compass, even before the elucidation thereof hath reached them: thus did those before them make charges of falsehood: but see what was the end of those who did wrong!

(30) They stained his shirt with false blood. He said: "nay, but your minds have made up a tale (that may pass) with you, (for me) patience is most fitting: Against that which ye assert, it is Allah (alone) Whose help can be sought"..