Exodus 9:8-11
8
Yahweh said to Moses and to Aaron, "Take to you handfuls of ashes of the furnace, and let Moses sprinkle it toward the sky in the sight of Pharaoh.
9
It shall become small dust over all the land of Egypt, and shall be a boil breaking forth with boils on man and on animal, throughout all the land of Egypt."
10
They took ashes of the furnace, and stood before Pharaoh; and Moses sprinkled it up toward the sky; and it became a boil breaking forth with boils on man and on animal.
11
The magicians couldn't stand before Moses because of the boils; for the boils were on the magicians, and on all the Egyptians.