Al-Qasas · 28:32

32. “Enter your right hand into your shirt collar, it will turn white upon you taking it out without any ailment.” So Moses placed it into his collar and removed it, with it having turned white like snow. “and draw your arm to your side” so Moses pressed it against his side and his fear subsided. So these two things that have been mentioned: the staff and the hand, are two proofs sent from your Lord to Pharaoh and the leaders from his people. Indeed, they were a nation who left the obedience of Allah by disbelief and sin.