Kabbalah for Chagigah 29:19

Do not [attempt] to refute me [with the case of] Elisha [ben Avuya].¹²Elisha ben Avuya was a rabbinic sage and the teacher of R. Meir. According to several rabbinic sources, he became a heretic and was referred to as Aḥer, “the Other One.” In Tosefta, Ḥagigah 2:3, his heresy is traced to the fact that he was one of four rabbis who entered Pardes (understood as the study of esoteric lore), out of which only R. Akiva emerged unscathed. There are several reasons why [this case is] not [relevant]. First of all, there we are dealing with heresy, God forbid. It is a fire which consumes down to Abaddon (Job 31:12). Secondly, he has already explained [that it has to be other] than Elisha “the Other One” in that [in this case the one who “errs”] recognizes his master …