Talmud for Eruvin 139:4

איתיביה אחד שלא עירב נותן רשותו לאחד שעירב שנים שעירבו נותנין רשותן לאחד שלא עירב ושנים שלא עירבו נותנין רשותן לשנים שעירבו או לאחד שלא עירב

may present his share<span class="x" onmousemove="('comment',' In their courtyard.');">¹²</span> to one of those who joined in the 'erub;<span class="x" onmousemove="('comment',' And, since this one is associated in the 'erub with the other, both of them are thereby permitted the unrestricted use of the courtyard.');">¹³</span> two tenants who joined in an 'erub<span class="x" onmousemove="('comment',' In a courtyard in which they lived with a third tenant.');">¹⁴</span> may present their shares<span class="x" onmousemove="('comment',' In their courtyard.');">¹⁵</span> to the one who did not join in their 'erub; and two tenants who did not join in an 'erub<span class="x" onmousemove="('comment',' With the two other tenants who lived in the same courtyard.');">¹⁶</span>

Jerusalem Talmud Eruvin