More on brit milah... When a child is born circumcised, what to do? You can take a drop of blood. Beit Hillel and Beit Shammai seem to disagree. R. Adda bar Ahava fathered a son who was born circumcised, and took that drop of blood, to his detriment. Also: If a baby is born to a woman who does not become impure in childbirth, what day should the brit milah be? Plus: Who's Who/What's What: Eved Kna'ani.