Reference for Eruvin 187:9

וחכמים אומרים מתוכה לרשות הרבים או מרשות הרבים לתוכה פטור מפני שהיא ככרמלית:

<big><b>MISHNAH: </b></big>IF THERE WAS A BREACH IN A WALL BETWEEN A COURTYARD<span class="x" onmousemove="('comment',' Lit., a courtyard that was broken into'; the breach extending along the full length of the courtyard, or being no more than ten handbreadths wide.');">¹³</span> AND A PUBLIC DOMAIN, ANY MAN WHO BRINGS ANY OBJECT FROM THE LATTER INTO A PRIVATE DOMAIN OR FROM A PRIVATE DOMAIN INTO IT IS GUILTY OF AN OFFENCE;<span class="x" onmousemove="('comment',' Because the breach changes the status of the courtyard from that of a private into that of a public domain. This will be further discussed in the Gemara infra.');">¹⁴</span>

Jastrow