Quran 26:33 from Surah Ash-Shu'araa on Divine Marvels.
وَنَزَعَ يَدَهُۥ فَإِذَا هِيَ بَيۡضَآءُ لِلنَّٰظِرِينَ
English translation: And he drew out his hand and behold! It (was) white for the observers
Transliteration: wanaza'a yadahu fa-idha hiya baydau lilnnazirina