John 9:15
So the Pharisees also were asking him again how he received sight. And he said to them, "He put clay on my eyes, and I washed, and I see."
John 9:10-11
So they began to say to him, "How were your eyes opened?"
John 9:26-27
So they said to him, "What did he do to you? How did he open your eyes?"