28:32
Insert your hand in your bosom it will come forth white from without any harm. And draw to yourselves your hand against fear. So these (are) two evidences from your Lord, to Firaun and his chiefs. Indeed, they are a people defiantly disobedient."

20:22
And draw near your hand to your side; it will come out white, (from) without any disease (as) a sign another.