Exodus 9
8 Ref 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 Ref 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 Ref 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.