General Requirement to make one's household happy: Pesachim 109a; Kiddushin 34b, 35a
The term "Simchah [Joy]" represents the celebration of Holidays: Megillah 16b
Requirement to gladden widows/poor women who live nearby: Kiddushin 34b
Whether women are obligated: Eruvin 27a; Kiddushin 34a
Staying at home on the holiday: Succah 27b
Specific gifts to give: Pesachim 109a Fasting on a holiday, for a limited time or for the whole day: Eruvin 41a
Eating to satisfy the requirement of joy: Moed Katan 14b
Wine [as a substitute for the Temple Offerings]: Pesachim 109a
New clothing: Pesachim 109a
For a Deaf and Mute Person and a Mute Person: Chagigah 2b-3a
Number of days of the Mitzvah, on Succot: Succah 42b, 48a
Related Issues
Marrying on Holidays: Chagigah 8b
Allowing collection of loans made orally on Holidays, to prevent losing Joy of the Holiday: Shabbat 148b
Whether the joy of Yom Tov is so important that we overlook certain halachic considerations in order to ensure that one will create this joy: Beitzah 7b, 8a, 9b-10a, 11a-b
Exercising leniency regarding laws of impurity, in order to ensure that people will bake ample bread and open good wine for Yom Tov: Beitzah 11b
