For these, one is liable to kares for a willful transgression, and for their inadvertent transgression, a chatas, and for their doubtful transgression, an asham talui, with the exception of one who contaminated the Temple or its consecrated foods, because he requires a variable-offering; [these are] the words of R’ Meir. The Sages say: Neither does the one who blasphemes, as it is said (Num. 15:29): One law shall be for you, for the one who acts in error. This excludes the blasphemer, who does not perform any action.