Commentary for Avodah Zarah 67:3
וכ"ת חמץ דאורייתא יין נסך דרבנן והא כל דתקון רבנן כעין דאורייתא תקון זה תשמישו בחמין וזה תשמישו בצונן
And should you say that hametz [on Pesah] is forbidden by the Torah, whereas idolatrous wine is merely a rabbinic prohibition, whatever the Rabbis enacted they enacted it to be like the Torah! This is used for hot and this is used for cold.
Daf Shevui to Avodah Zarah
This is a rejected attempt to solve the contradiction. We might have thought that the rules are stricter when it comes to hametz, for hametz is prohibited by the Torah whereas idolatrous wine is prohibited only by rabbinic decree.
The problem with this is that there is a principle that whenever the rabbis make a decree, it is supposed to be of the same level as Torah law. Thus if all glazed vessels used with hametz are prohibited on Pesah, so too are glazed vessels used with idolatrous wine.
The problem with this is that there is a principle that whenever the rabbis make a decree, it is supposed to be of the same level as Torah law. Thus if all glazed vessels used with hametz are prohibited on Pesah, so too are glazed vessels used with idolatrous wine.
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Daf Shevui to Avodah Zarah
The answer is that glazed wine vessels do not absorb taste because they are used only with cold wine. The hametz vessels referred to here are used with hot hametz (such as cooked cereal) and therefore they do absorb taste.
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