Reference for Eruvin 97:4
ואזדא שמואל לטעמיה דאמר שמואל חצר שבין שני מבואות עירבה עם שניהם אסורה עם שניהם
To three courtyards that open one into the other and also into a public domain, where, if the two outer ones made an 'erub with the middle one, the residents of each of the two may bring food from their houses [into the middle one] and eat it there and then they may carry back any remnants to their houses;<span class="x" onmousemove="('comment',' Lit., 'this brings from her house and eats etc. and this returns her remainder to her house' etc.');"><sup>5</sup></span> but the Sages ruled: The three courtyards are forbidden access to one another.<span class="x" onmousemove="('comment',' Now, since R. Simeon here only permits the residents of the outer courtyards to use the middle one and not vice versa, this Baraitha is obviously in agreement with Samuel's view.');"><sup>6</sup></span>