More on the mourner in the immediacy of mourning, as another distinction between the Korban Pesach and other kodshim. In contrast to one who hears of a close relative's death more than 30 days after the death. Also, the case of a convert who converts on Erev Pesach, and the dispute between Beit Hillel and Beit Shammai. As part of the consideration of the many different populations and the application of who they are with regard to the Korban Pesach. Plus: 6 scenarios of rabbinic decrees and their own limitations. Now, the next chapter: On Pesach Sheni. And another dispute, this time between R. Nachman and R. Sheshet, hinging on their different takes on the exact same case and prooftext.