Something To Pick At

In a neighborhood where there is no communal eiruv, an eiruv chatzeiros is required to carry on Shabbos from one’s home into a common area. In the Lower East Side there is no eiruv that permits carrying in the streets. Still, residents are allowed to carry from their co-ops to their hallways or to other apartments by means of an eiruv chatzeiros. Typically, one resident of the building designates a box of matzos to serve as the eiruv. However, another way of making the eiruv is asking residents to each contribute a certain amount of bread.
Rebbe Yehoshua is of the opinion that every resident must contribute a full loaf or roll of bread. It would generate animosity if some neighbors contributed full loaves towards the eiruv only to discover that another resident gave mere pieces. For the sake of shalom and uniformity, Rebbe Yehoshua said that every resident should contribute a complete loaf or roll of bread. It is true that neighbors can still complain that they gave a full 2-pound rye bread whereas the other resident gave a challah roll. However, it would be a stretch for Chazal to dictate exactly how much bread every resident should contribute.