The Simcha of a Siyum
The Mishna at the end of Taanis (26b) quotes Rabban Shimon Ben Gamliel who declares that the most joyous holidays on the Jewish calendar are Yom Kippur and Tu B’Av.
Talmud Torah
The source and significance of making a celebratory meal on completing a masechta or sefer, and what learning qualifies for a siyum.
The Mishna at the end of Taanis (26b) quotes Rabban Shimon Ben Gamliel who declares that the most joyous holidays on the Jewish calendar are Yom Kippur and Tu B’Av.