John 9:15
So the Pharisees also began to ask him how he had gained his sight. He told them, "He put mud on my eyes, then I washed, and now I can see."
John 9:10-11
So they asked him, "How, then, did you gain your eyesight?"
John 9:26-27
Then they asked him, "What did he do to you? How did he heal your eyes?"