And to Samood (We sent) their brother Salih. He said: O my people! serve Allah, you have no god other than Him; clear proof indeed has come to you from your Lord; this is (as) Allah's she-camel for you-- a sign, therefore leave her alone to pasture on Allah's earth, and do not touch her with any harm, otherwise painful chastisement will overtake you.

And press your hand to your side, it shall come out white without evil: another sign:

And enter your hand into the opening of your bosom, it shall come forth white without evil; among nine signs to Firon and his people, surely they are a transgressing people.