Exodus 9:6

2For if you refuse to let them go, and hold them still,

3behold, the LORD’s hand is on your livestock which are in the field, on the horses, on the donkeys, on the camels, on the herds, and on the flocks with a very grievous pestilence.

4The LORD will make a distinction between the livestock of Israel and the livestock of Egypt; and nothing shall die of all that belongs to the children of Israel.”’”

5The LORD appointed a set time, saying, “Tomorrow the LORD shall do this thing in the land.”

6The LORD did that thing on the next day; and all the livestock of Egypt died, but of the livestock of the children of Israel, not one died.

7Pharaoh sent, and, behold, there was not so much as one of the livestock of the Israelites dead. But the heart of Pharaoh was stubborn, and he didn’t let the people go.

8The LORD said to Moses and to Aaron, “Take handfuls of ashes of the furnace, and let Moses sprinkle it toward the sky in the sight of Pharaoh.

9It shall become small dust over all the land of Egypt, and shall be boils and blisters breaking out on man and on animal, throughout all the land of Egypt.”

10They took ashes of the furnace, and stood before Pharaoh; and Moses sprinkled it up toward the sky; and it became boils and blisters breaking out on man and on animal.