At present, there is a pervasive view in the Buddhist and Buddhist academic circles that, according to Buddhist precepts, those who commit suicide are guilty of homicide. However, commentators who hold this view have rarely cited the literature of the Vinaya in support of their claims. This article examines the "manussa-viggaha pārājika" ("the destruction of life") in the Upasampadā (the Full Precepts) to show that contrary to the popular view, suicide does not constitute pārājika (grave offense). As described in the extant versions of the Vinaya, committing suicide is regarded as an instance of sthūlātyaya (serious crime), duskrta (minor misdeed), or even a sinless act. It can be seen, therefore, that there is no consensus in the rules of discipline regarding the criminality of suicide. Nevertheless, all versions of the Vinaya consider suicide as an unvirtuous act that needs to be treated seriously but does not call for extensive censure. In short, the Upasampadā of the śrāvaka-vinaya takes on an attitude that is serious but at the same time lenient towards suicide.