John 9:15
Again, therefore, the Pharisees also asked him, how he received sight. And he said to them, "He put clay upon my eyes, and I washed, and see."
John 9:10-11
They said, therefore, to him, "How then were your eyes opened?"
John 9:26-27
They said, therefore, to him, "What did He do to you? how did He open your eyes?"