Wakaththaboo wattabaAAoo ahwaahum wakullu amrin mustaqirr (surah Al Qamar: 3)

Tafseer Tafheem-ul-Quran by Syed Abu-al-A'la Maududi

(54:3) They also gave the lie to (the splitting asunder of the moon) and only followed their desires. *3 Yet everything is destined to reach an end.  *4

Wa kazzaboo wattaba`ooo ahwaaa`ahum; wa kullu amrim mustaqirr

*3) That is, "They still persisted in the same decision that they had made of denying the Hereafter and have not changed their mind even after having witnessed this manifest Sign, mainly because it clashed with their desires of the flesh. "
*4) That is, "It cannot be so endlessly that Muhammad (upon whom be Allah's peace and blessings) should go on inviting you to the Truth while you persist in your falsehood stubbornly and his Truth and your falsehood should never be established. AII affairs ultimately have to reach an appointed end. Likewise, inevitably this conflict between you and Muhammad (upon whom be Allah's peace and blessings) has also to reach an end. A time will certainly come when it will be clearly established that he had been in the right and you in the wrong throughout. Likewise, the worshippers of the T ruth shall one day see the result of their worshipping the Truth and the worshippers of falsehood of their worshipping the falsehood."