The Sadducee attempt to invalidate the water libation: Succah 48b
The Celebration
Which night of Succot had the celebration: Succah 51a
If one hasn't seen this celebration, he hasn't seen joy: Succah 51a, 51b
Whether this Mitzvah was celebrated as "Simchat Beit HaShoevah [The Joy of the Room of Water-Drawing]" or "Simchat HaChashuvah [Joy of the Important (Mitzvah)]": Succah 50b
The Divider which was constructed between the Genders: Succah 51b-52a