Numbers 12:1, 4, 9-10

Now 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, Aaron, and Miriam, “Come out, you three, to the Tent of Meeting (tabernacle).” And the three of them came out.

And the anger of the LORD was kindled against Miriam and Aaron, and He departed. But when the cloud had withdrawn from over the tent, behold, Miriam was leprous, as white as snow. And Aaron turned and looked at Miriam, and, behold, she was leprous.