Exodus 9:3-5

3behold, the hand of Adonai will fall upon your livestock that are in the field—on the horses, donkeys, camels, herds and flocks. There will be a crushing plague.

4But Adonai will make a distinction between the cattle of Israel and the cattle of Egypt, and nothing will die that belongs to Bnei-Yisrael.”

5Also Adonai set a specific time, saying, “Tomorrow Adonai will do this thing in the land.”