Exodus 9:3-5

3then the Lord’s hand will bring a severe plague against your livestock in the field — the horses, donkeys, camels, herds, and flocks.

4But the Lord will make a distinction between the livestock of Israel and the livestock of Egypt, so that nothing of all that the Israelites own will die.”

5And the Lord set a time, saying, “Tomorrow the Lord will do this thing in the land.”