I mentioned to someone a vort I once heard pointing out a difficulty in the story of Potiphar's wife. Why did Potiphar not have Yosef killed, which would be the expected punishment for attacking the wife of a high-level government minister?
The answer is that Potiphar noticed that his wife had ripped the back of Yosef's garment, which would seem to indicate that Yosef was trying to get away from the wife, not trying to attack her. For this reason (and also because he knew Yosef's character) Potiphar did not believe his wife's story.
However Potiphar was not prepared to exonerate Yosef, as that would amount to publicly exposing his wife as a liar, so he had Yosef put in prison instead.
I was asked for a source for this but don't remember any. What is the source?