"And he locked the hail in their cities." When the hail was about to come, Moses said to Pharaoh, "Send out your livestock." Pharaoh replied, "Now we are going to listen to the words of the son of Amram?" Rabbi Re'aya Bedayti explains: Once there was a woman who had a staff that she would use to strike her, but when the hail came, it became like a wall in front of her sheep. "And he locked the hail in their cities," and they could not move. The Egyptians said, "Woe to that man! What is he doing?" He would take an animal, slaughter it, and feed his children from it. When he slaughtered it, the bird would come and snatch it from his shoulder, as it says, "And their livestock to the hail." It is similar to what is said, "And the sons of the Raphaim will raise up birds."...
The Bitter Irony When Moses Faced Pharaoh's Court
Midrash Tehillim 78:9