GUILTLESSNESS
have a clear conscience (about sb or sth) and have a clean conscience (about someone or sth)
to be free of guilt about someone or something.I'm sorry that John got the blame. I have a clean conscience about the whole affair.I have a clear conscience about John and his problems.I didn't do it. I have a clean conscience.She can't sleep at night because she doesn't have a clear conscience.
have clean hands
to be guiltless. (As if the guilty person would have bloody hands.)Don't look at me. I have clean hands.The police took him in, but let him go again because he had clean hands.