Surah Ash-Shu'ara — Ayah 33 (26:33)
وَنَزَعَ يَدَهُۥ فَإِذَا هِيَ بَيۡضَآءُ لِلنَّٰظِرِينَ ٣٣
English translation (Saheeh International)
And he drew out his hand; thereupon it was white for the observers.
Brief commentary
He put his hand into the opening of his garment without its being white and then he drew it out radiant white - not the white of leprosy - for the onlookers to see.