20:22
وَ ٱضْمُمْ يَدَ كَ إِلَىٰ جَنَاحِ كَ تَخْرُجْ بَيْضَآءَ مِنْ غَيْرِ سُوٓءٍ ءَايَةً أُخْرَىٰ
And draw in your hand to your side; it will come out white without disease - another sign,
28:32
ٱسْلُكْ يَدَ كَ فِى جَيْبِ كَ تَخْرُجْ بَيْضَآءَ مِنْ غَيْرِ سُوٓءٍ وَ ٱضْمُمْ إِلَيْ كَ جَنَاحَ كَ مِنَ ٱل رَّهْبِ فَ ذَٰنِكَ بُرْهَٰنَانِ مِن رَّبِّ كَ إِلَىٰ فِرْعَوْنَ وَ مَلَإِي۟ هِۦٓ إِنَّ هُمْ كَانُ وا۟ قَوْمًا فَٰسِقِينَ
Insert your hand into the opening of your garment; it will come out white, without disease. And draw in your arm close to you [as prevention] from fear, for those are two proofs from your Lord to Pharaoh and his establishment. Indeed, they have been a people defiantly disobedient."