For evidence, Hanafi fiqh accepts the following: self-confession, or testimony of four male witnesses (female witnesses are not acceptable). Hanafi Islamic law literature specifies two types of stoning. One, when the punishment is based on "bayyina", or concrete evidence (four male witnesses). In this case the person is bound, a pit dug, the bound person placed and partially buried inside the pit so that he or she may not escape, thereafter the public stoning punishment is executed. A woman sentenced to stoning must be partially buried up to her chest. The first stones are thrown by the witnesses and the accuser, thereafter the Muslim community present, stated Abū Ḥanīfa and other Hanafi scholars. In second type of stoning, when the punishment is based on self-confession, the stoning is to be performed without digging a pit or partially burying the person. In this case, the qadi (judge) should throw the first stone before other Muslims join in. Further, if the person flees, the person is allowed to leave.