Exodus 7:24 in the King James Version
And all the Egyptians digged round about the river for water to drink; for they could not drink of the water of the river.
Context
23 Pharaoh turned and went into his house, and he didn’t even take this to heart.
24 All the Egyptians dug around the river for water to drink; for they couldn’t drink the river water.
25 Seven days were fulfilled, after the LORD had struck the river.