Qur'ān 6:134 · Al-An'am (الأنعام)

إِنَّ مَا تُوعَدُونَ لَـَٔاتٍۢ ۖ وَمَآ أَنتُم بِمُعْجِزِينَ

Indeed, what you are promised is coming, and you will not cause failure [to Allah].