The five precepts are not commandments and transgressions do not invite religious sanctions, but their power has been based on the Buddhist belief in karmic consequences and their impact in the afterlife. Killing in Buddhist belief leads to rebirth in the hell realms, and for a longer time in more severe conditions if the murder victim was a monk. Adultery, similarly, invites a rebirth as prostitute or in hell, depending on whether the partner was unmarried or married. These moral precepts have been voluntarily self-enforced in lay Buddhist culture through the associated belief in karma and rebirth. Within the Buddhist doctrine, the precepts are meant to develop mind and character to make progress on the path to enlightenment.