Quran 28:32 Al-Qasas, ayah 32 of 88

ٱسْلُكْ يَدَكَ فِى جَيْبِكَ تَخْرُجْ بَيْضَآءَ مِنْ غَيْرِ سُوٓءٍ وَٱضْمُمْ إِلَيْكَ جَنَاحَكَ مِنَ ٱلرَّهْبِ ۖ فَذَٰنِكَ بُرْهَـٰنَانِ مِن رَّبِّكَ إِلَىٰ فِرْعَوْنَ وَمَلَإِي۟هِۦٓ ۚ إِنَّهُمْ كَانُوا۟ قَوْمًا فَـٰسِقِينَ ۝٣٢

28:32 Thrust thy hand into the bosom of thy robe it will come forth white without hurt. And guard thy heart from fear. Then these shall be two proofs from your Lord unto Pharaoh and his chiefs. Lo! they are evil-living folk.