The word(s) "but" appears 1287 time(s) in 1137 verse(s) in Quran in Mohsin Khan translation.

(21) And (remember) when We took a covenant from the Children of Israel, (saying): Worship none but Allah (Alone) and be dutiful and good to parents, and to kindred, and to orphans and Al-Masakin (the poor), and speak good to people [i.e. enjoin righteousness and forbid evil, and say the truth about Muhammad صلى الله عليه وسلم], and perform As-Salat (Iqamat-as-Salat), and give Zakat. Then you slid back, except a few of you, while you are backsliders. (Tafsir Al-Qurtubi).

(22) but they will never long for it because of what their hands have sent before them (i.e. what they have done). And Allah is All-Aware of the Zalimun (polytheists and wrong-doers).

(23) And verily, you will find them (the Jews) the greediest of mankind for life and (even greedier) than those who ascribe partners to Allah (and do not believe in Resurrection - Majus, pagans, and idolaters). Everyone of them wishes that he could be given a life of a thousand years. but the grant of such life will not save him even a little from (due) punishment. And Allah is All-Seer of what they do.

(24) And indeed We have sent down to you manifest Ayat (these Verses of the Qur'an which inform in detail about the news of the Jews and their secret intentions, etc.), and none disbelieve in them but Fasiqun (those who rebel against Allah's Command).

(25) They followed what the Shayatin (devils) gave out (falsely of the magic) in the lifetime of Sulaiman (Solomon). Sulaiman did not disbelieve, but the Shayatin (devils) disbelieved, teaching men magic and such things that came down at Babylon to the two angels, Harut and Marut, but neither of these two (angels) taught anyone (such things) till they had said, "We are only for trial, so disbelieve not (by learning this magic from us)." And from these (angels) people learn that by which they cause separation between man and his wife, but they could not thus harm anyone except by Allah's Leave. And they learn that which harms them and profits them not. And indeed they knew that the buyers of it (magic) would have no share in the Hereafter. And how bad indeed was that for which they sold their ownselves, if they but knew.

(26) And if they had believed, and guarded themselves from evil and kept their duty to Allah, far better would have been the reward from their Lord, if they but knew!

(27) O you who believe! Say not (to the Messenger صلى الله عليه وسلم) Ra'ina but say Unzurna (make us understand) and hear. And for the disbelievers there is a painful torment. (See Verse 4:46)

(28) Neither those who disbelieve among the people of the Scripture (Jews and Christians) nor Al-Mushrikun (the idolaters, polytheists, disbelievers in the Oneness of Allah, pagans, etc.) like that there should be sent down unto you any good from your Lord. but Allah chooses for His Mercy whom He wills. And Allah is the Owner of Great Bounty.

(29) Many of the people of the Scripture (Jews and Christians) wish that if they could turn you away as disbelievers after you have believed, out of envy from their ownselves, even after the truth (that Muhammad صلى الله عليه وسلم is Allah's Messenger) has become manifest unto them. but forgive and overlook, till Allah brings His Command. Verily, Allah is Able to do all things.

(30) Yes, but whoever submits his face (himself) to Allah (i.e. follows Allah's Religion of Islamic Monotheism) and he is a Muhsin then his reward is with his Lord (Allah), on such shall be no fear, nor shall they grieve. [See Tafsir Ibn Kathir ].