Shabbat 19a and Shabbat 19b, we finish up 18b with a first glimpse of shema yehateh be-gehalim, the things we prohibit in terms of cooking, for fear a person will stoke the coals on Shabbat. Then, continuing Beit Shammai’s theme of actions with non-Jews that lead into Shabbat, we discussed giving mail to a non-Jew, setting siege to a city, and setting sail on a ship too close to Shabbat. We closed with a discussion of actions set into motion before Shabbat, leaving grapes in a press, and who holds those views.