Responsa for Eruvin 143:2
מיתיבי וחכמים אומרים או מערבין או משתתפין מאי לאו או מערבין בחצר בפת או משתתפין במבוי ביין
An objection was raised: 'The Sages, however, ruled: Either 'erub or shittuf is enough'. Does not this mean that it is permissible to prepare an 'erub in a courtyard with bread or arrange shittuf in an alley with wine?<span class="x" onmousemove="('comment',' And either presumably suffices for both alley and courtyards. How then is this to be reconciled with the second view that 'in the case of wine no one disputes the ruling that the two are necessary'?');"><sup>5</sup></span> - R'Giddal citing Rab replied: It is this that was meant: Either an 'erub for the courtyards<span class="x" onmousemove="('comment',' So MS. M. Cur. edd. have the sing. 'courtyard'.');"><sup>6</sup></span> is prepared with bread, and unrestricted movement Is permitted in both the alley and the courtyards;<span class="x" onmousemove="('comment',' Lit., 'here and here'.');"><sup>7</sup></span>
Teshuvot Maharam
A. All the court-yards from which one can enter, directly or through other courtyards, into the one where the common-food has been deposited, without having to cross the alley, form a single domain within the limits of which, objects may be carried on the Sabbath. In the remaining court-yards, one is not permitted to do so.
SOURCES: Cr. 39; Pr. 422; Mord. Erub. 518; Hag. Maim. to Erubin 3, 6.
Teshuvot Maharam
SOURCES: Pr. 89; cf. Hag. Maim., Erubin 1, 9.
Teshuvot Maharam
A. All the court-yards from which one can enter, directly or through other courtyards, into the one where the common-food has been deposited, without having to cross the alley, form a single domain within the limits of which, objects may be carried on the Sabbath. In the remaining court-yards, one is not permitted to do so.
SOURCES: Cr. 39; Pr. 422; Mord. Erub. 518; Hag. Maim. to Erubin 3, 6.