20:129
وَلَوْلَا كَلِمَةٌ سَبَقَتْ مِنْ رَبِّكَ لَكَانَ لِزَامًا وَاَجَلٌ مُسَمًّىؕ
Walawla kalimatun sabaqat min rabbika lakana lizaman waajalun musamman
Translations
And if not for a word that preceded from your Lord, punishment would have been an obligation [due immediately], and [if not for] a specified term [decreed]
Saheeh International
And but for a decree that had already gone forth from thy Lord, and a term already fixed, the judgment would have been inevitable (in this world)
Marmaduke Pickthall