futility of delayed repentance

قُلْ يَوْمَ ٱلْفَتْحِ لَا يَنفَعُ ٱلَّذِينَ كَفَرُوٓا۟ إِيمَـٰنُهُمْ وَلَا هُمْ يُنظَرُونَ

Say, [O Muḥammad], "On the Day of Conquest the belief of those who had disbelieved will not benefit them, nor will they be reprieved."