Taha 20:129

وَلَوْلَا كَلِمَةٌ سَبَقَتْ مِن رَّبِّكَ لَكَانَ لِزَامًا وَأَجَلٌ مُّسَمًّى

Walawlā kalimatun sabaqat min rabbika lakāna lizāman wa-ajalun musamman

And if not for a word that preceded from your Lord, it [i.e., punishment] would have been an obligation [due immediately], and [if not for] a specified term [decreed].