Exodus 9:8-10

Living Bible

⁸ Then Jehovah said to Moses and Aaron, “Take ashes from the kiln and have Moses toss them into the sky as Pharaoh watches. ⁹ They will spread like fine dust over all the land of Egypt and cause boils to break out upon people and animals alike, throughout the land.”

¹⁰ So they took ashes from the kiln and went to Pharaoh; as he watched, Moses tossed them toward the sky, and they became boils that broke out on men and animals alike throughout all Egypt.