Pesahim 91a and Pesahim 91b, who we can trust will be able to join the Pesah that night even if they are not currently able to join, whether we can have only one person signed up for a Pesah, the status of women regarding the first and second Pesah sacrifices (14 Nisan and 14 Iyyar) and for matzah, and whether matzah is obligatory throughout the holiday.
