Quran 51:38 from Surah Adh-Dhaariyat on Divine Marvels.
وَفِي مُوسَىٰٓ إِذۡ أَرۡسَلۡنَٰهُ إِلَىٰ فِرۡعَوۡنَ بِسُلۡطَٰنٖ مُّبِينٖ
English translation: And in Musa when We sent him to Firaun with an authority clear
Transliteration: wafi musa idh arsalnahu ila fir'awna bisul'tanin mubinin