Numbers 12:1, 4, 9-10

Then Miriam and Aaron spoke against Moses because of the Cushite woman whom he had married (for he had married a Cushite woman)

Suddenly the LORD said to Moses and Aaron and to Miriam, “You three come out to the tent of meeting.” So the three of them came out.

So the anger of the LORD burned against them and He departed. But when the cloud had withdrawn from over the tent, behold, Miriam was leprous, as white as snow. As Aaron turned toward Miriam, behold, she was leprous.