Shabbat 84a and Shabbat 84b, figuring out the midras tum’ah, the ritual impurity associated with a zav sitting on items, and whether and how it applies to pottery, to large items, and to where their openings are. Then, shifting to another area of law often left less studied, agriculture and kil’ayim, the number of different crops that can be planted in one small patch of a garden.
