The fourth chapter (or "sura") of the Quran is called "Women" ("an-nisa"). The 34th verse is a key verse in feminist criticism of Islam. The verse notes men's God-given advantages over women. They are consequently their protectors and maintainers. Where women are disobedient "admonish them, and leave them alone in the sleeping-places and beat them; then if they obey you, do not seek a way against them..." In his book "", University of Southern California, Professor Reza Aslan wrote that "misogynistic interpretation" has been persistently attached to An-Nisa, 34 because commentary on the Quran "has been the exclusive domain of Muslim men".