Reference for Avodah Zarah 52:4

איתמר מומר פליגי רב אחא ורבינא חד אמר לתיאבון מומר להכעיס מין הוי וחד אמר אפילו להכעיס נמי מומר אלא איזהו מין זה העובד אלילי כוכבים

It was stated: [In regard to the term] “apostate” there is a disagreement between R. Aha and Ravina; one says that [he who eats forbidden food] to satisfy his appetite, is an apostate, but [he who does so] to provoke is a heretic; while the other says that even [one who does so] to provoke is merely an apostate. And who is a “heretic”? One who actually worships idols.

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