When may rights be ceded? Beis Shammai say: While it is yet day. But Beis Hillel say: When it is dark. One who ceded his rights then carried out, whether unintentionally or deliberately, restricts — [these are] the words of R’ Meir. R’ Yehudah says: Deliberately, he restricts; unintentionally, he does not restrict.

If a houseowner was a partner with neighbors, with this one in wine and with that one in wine, they need not make an eruv; with this one in wine and with that one in oil, they must make an eruv. R’ Shimon says: In either case they need not make an eruv.