Reply To: Rav Chaim: A Nebach Apikorus is also an Apikorus

WIY: It’s the famous Ra’avad in Hilchos Avodah Zarah (maybe T’shuvah? I don’t remember) where the Rambam talks about Apikorsus. The Rambam explicitly says that one who mistakenly believes in corporeality of G-d is an Apikores, to which the Ra’avad famously replied, “Gedolim V’tovim Heimenu… have erred on this matter because of their learning”.