Said Pharaoh, "You believed in him1 before I gave you permission. Indeed, this is a conspiracy which you conspired in the city to expel therefrom its people. But you are going to know.
Translation: Saheeh International (English)
1 i.e., in Moses, avoiding the mention of Allāh (subḥānahu wa taʿālā).
Pharaoh said threatening them because of their faith in Allah: 'Do you believe in Allah before I have given you permission to do so. This is only a trick you were deceiving people with, and a plot that you and Moses have planned to drive out the people of the city. But soon you will know what the consequences are and what an example I will make of you!'