Commentary for Avodah Zarah 14:6
ואיבעית אימא דשמואל איכא בינייהו דאמר שמואל בגולה אין אסור אלא יום אידם תנא קמא אית ליה דשמואל רבנן בתראי לית להו דשמואל
If you want you can say that they disagree over Shmuel. For Shmuel said: In the Diaspora the prohibition is limited to their festival day only. The first tanna holds by Shmuel’s ruling, while our later rabbis do not hold like Shmuel.
Daf Shevui to Avodah Zarah
Shmuel restricts the three day prohibition to the land of Israel. In the Diaspora, where idol worship does not, according to him, have such a great hold on the populace, the prohibition is only for one day. This is another possible point of dispute between the two opinions.
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