قَالَ هٰذَا رَحۡمَةٌ مِّنۡ رَّبِّيۡۚ فَاِذَا جَآءَ وَعۡدُ رَبِّيۡ جَعَلَهٗ دَكَّآءَۚ وَكَانَ وَعۡدُ رَبِّيۡ حَقًّاؕ‏

[Dhul-Qarnayn] said, "This is a mercy from my Lord; but when the promise of my Lord comes, He will make it level, and ever is the promise of my Lord true