20:129
وَلَوْلَا كَلِمَةٌ سَبَقَتْ مِن رَّبِّكَ لَكَانَ لِزَامًا وَأَجَلٌ مُّسَمًّى١٢٩
And if not for a word1 that preceded from your Lord, it [i.e., punishment] would have been an obligation [due immediately],2 and [if not for] a specified term [decreed].
— Saheeh International