רש"י מסכת סנהדרין דף עג:א
It is not his way to be penetrated by a male, [one may kill the pursuer to prevent] great shame and embarrassment. [Translation by Rabbi Steven Greenberg]
Suggested Discussion Questions:
What sort of shame and embarrassment do you think Rashi is referring to?
Time Period: Medieval (Geonim through the 16th Century)