Eruvin 41a and Eruvin 41b, the issue of fasting on Friday all the way into Shabbat or not, and then a new chapter, about what happens when people or produce are taken out of the Shabbat boundaries and brought back in.
Eruvin 41a and Eruvin 41b, the issue of fasting on Friday all the way into Shabbat or not, and then a new chapter, about what happens when people or produce are taken out of the Shabbat boundaries and brought back in.