Exodus 9:7-9

Amplified Bible, Classic Edition

⁷ Pharaoh sent to find out, and behold, there was not one of the cattle of the Israelites dead. But the heart of Pharaoh was hardened [his mind was set] and he did not let the people go.

⁸ The Lord said to Moses and Aaron, Take handfuls of ashes or soot from the brickkiln and let Moses sprinkle them toward the heavens in the sight of Pharaoh.

⁹ And it shall become small dust over all the land of Egypt, and become boils breaking out in sores on man and beast in all the land [occupied by the Egyptians].