If she gave birth to two males, one of them is offered as an olah, and the second one is sold to those who have an olah obligation, and its proceeds are chullin. If she gave birth to two females, one of them is offered as a shelamim, and the second one is sold to those who have a shelamim obligation, and its proceeds are chullin.  [If] she gave birth to a tumtum or an androgyne, Rabban Shimon ben Gamliel says: No sanctity takes effect upon them.