Exodus 9:9-11

Amplified Bible, Classic Edition

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].

¹⁰ So they took ashes or soot of the kiln and stood before Pharaoh; and Moses threw them toward the sky, and it became boils erupting in sores on man and beast.

¹¹ And the magicians could not stand before Moses because of their boils; for the boils were on the magicians and all the Egyptians.