Quran 37:52 from Surah As-Saaffaat on Divine Marvels.
يَقُولُ أَءِنَّكَ لَمِنَ ٱلۡمُصَدِّقِينَ
English translation: Who (would) say Are you indeed surely of those who believe
Transliteration: yaqulu a-innaka lamina al-musadiqina