Pesahim 70a and Pesahim 70b, figuring out the hagigah of the 14th of Nisan, how similar it is to the Pesah itself, particularly according to Ben Tema, and another tanna, Yehudah Ben Dortai’s protest of the view that we do not offer a hagigah on Shabbat, the source of that idea, and then starting on why offerings given before a holiday can or cannot fulfill obligations of the holiday.
