Pesahim 53a and Pesahim 53b, finishing up shemittah issues in terms of when fruit has grown enough to qualify as shemittah fruit, how we decide there is no longer a type of produce in the field, and why we care to define different types of areas (hills, valleys, plains, riverbeds). Then, the custom to eat or not eat roasted meat Seder night, and what looks too much like offering a Pesah sacrifice, and then the custom to light or not light candles on Yom Kippur, leading into a discussion of havdallah.
