﴿ وَأَدْخِلْ يَدَكَ فِى جَيْبِكَ تَخْرُجْ بَيْضَآءَ مِنْ غَيْرِ سُوٓءٍۢ ۖ فِى تِسْعِ ءَايَٰتٍ إِلَىٰ فِرْعَوْنَ وَقَوْمِهِۦٓ ۚ إِنَّهُمْ كَانُوا۟ قَوْمًۭا فَٰسِقِينَ ﴾

““Now place thy hand into thy bosom: it will come forth [shining] white, without blemish!” [And thou shalt go] with nine [of My] messages unto Pharaoh and his people for, verily, they are people depraved!””

Please check ayah 27:14 for complete tafsir.