Quran 38:84 from Surah Saad on Divine Marvels.
قَالَ فَٱلۡحَقُّ وَٱلۡحَقَّ أَقُولُ
English translation: He said Then (it is) the truth and the truth I say
Transliteration: qala fal-haqu wal-haqa aqulu