Exodus 9:6-8

New Revised Standard Version, Anglicised Catholic Edition

⁶ And on the next day the Lord did so; all the livestock of the Egyptians died, but of the livestock of the Israelites not one died. ⁷ Pharaoh inquired and found that not one of the livestock of the Israelites was dead. But the heart of Pharaoh was hardened, and he would not let the people go.

The Sixth Plague: Boils

⁸ Then the Lord said to Moses and Aaron, ‘Take handfuls of soot from the kiln, and let Moses throw it in the air in the sight of Pharaoh.