John Chrysostom — as excerpted in the Catena Aurea on John 9:1-7

“(Hom. liv. 1. c. 5) They were led to ask this question, by our Lord having said above, on healing the man sick of the palsy, Lo, thou art made whole; sin no more. Thinking from this that the man had been struck with the palsy for his sins, they ask our Lord of the blind man here, whether he did sin, or his parents; neither of which could have been the reason of his blindness; the former, because he had been blind from his birth; the latter, because the son does not suffer for the father.”