John 9:2

And His disciples asked Him, saying, "Rabbi, who sinned, this man or his parents, that he was born blind?"

Surrounding context

9:1 Now as Jesus passed by, He saw a man who was blind from birth.

9:2 And His disciples asked Him, saying, "Rabbi, who sinned, this man or his parents, that he was born blind?"

9:3 Jesus answered, "Neither this man nor his parents sinned, but that the works of God should be revealed in him.