Qur'an 18:98 · Al-Kahf

قَالَ هَٰذَا رَحْمَةٌۭ مِّن رَّبِّى ۖ فَإِذَا جَآءَ وَعْدُ رَبِّى جَعَلَهُۥ دَكَّآءَ ۖ وَكَانَ وَعْدُ رَبِّى حَقًّۭا

(98) [Dhul-Qarnayn] said, "This is a mercy from my Lord; but when the promise of my Lord[799] comes [i.e., approaches], He will make it level, and ever is the promise of my Lord true."