I really don't know why I'm writing all this on this post. All I have to say that such people will have sex with their own daughters and sisters and still there should be something to justify. What has he done?
As a man you can have sex with a nine year old girl and justify it one way or the other. Islam needs ammendment or such sinners will keep thriving.
There should be no justification, it's a sex slavery or henious incest. I don't know how this person will reach if his own daughter is eaten up by someone elder than him.