Quran 7:108 from Surah Al-A'raaf on Divine Marvels.
وَنَزَعَ يَدَهُۥ فَإِذَا هِيَ بَيۡضَآءُ لِلنَّٰظِرِينَ
English translation: And he drew out his hand and suddenly it (was) white for the observers
Transliteration: wanaza'a yadahu fa-idha hiya baydau lilnnazirina