Aliyah Quote #3: Olive Oil and Olives

R. Oshaya says: Shnei Maklos...No'am [and] Chovelim - "No'am" refers to Chachamim [Torah Scholars] of Eretz Yisrael, who pleasantly help each other in Halachah - "Chovelim" refers to Chachamim of Bavel, who attack [try to refute] each other in Halachah.

R. Yitzchak says: ...Benei ha'Yitzhar ha'Omedim [and it says before this] U'Shnayim Zeisim Aleha - "Yitzhar" refers to Chachamim of Eretz Yisrael, who are as pleasant to each other in Halachah as olive oil. "Zeisim" refer to Chachamim of Bavel, who are as bitter to each other in Halachah as olives. (Sanhedrin 24a)