Chelek 28, Yud Beis Sivan
When the Yidden came to Yerushalayim for the Shalosh Rigalim, To bring sacrifices they had an obligation, But for everyone to bring their sacrifices on one day would be a great feat, So they were given a total of 7 catch up days so that this task they could complete. Since the Shalosh Regalim are listed together the Gemara does derive, That after Shavuos there are days five, That are Tashlumin - a festival catch up period, Therefore the Alter Rebbe rules that on these days Tachanun isn't recited. To Pesach and Sukkos how does Shavuos compare? There is a big difference it is clear, The catch up days for Pesach and Sukkos are holy, While the catch up days for Shavuos are on weekdays that are ordinary. There are two opinions about the Tashlumin, 1. The first day of Yom Tov is the primary obligation. All the Korbanos that are brought are to catch up for day one, If a boy is 12 on the first day of Pesach he is not obligated to bring a Korban. 2. The obligation applies to all seven days ...