Quran 18:98 from Surah Al-Kahf on Divine Marvels.
قَالَ هَٰذَا رَحۡمَةٞ مِّن رَّبِّيۖ فَإِذَا جَآءَ وَعۡدُ رَبِّي جَعَلَهُۥ دَكَّآءَۖ وَكَانَ وَعۡدُ رَبِّي حَقّٗا
English translation: He said This (is) a mercy from my Lord But when comes (the) Promise (of) my Lord He will make it level And is (the) Promise (of) my Lord true
Transliteration: qala hadha rahmatun min rabbi fa-idha jaa wa'du rabbi ja'alahu dakkaa wakana wa'du rabbi haqqan