Reference for Bava Batra 152:6

אמר רב אשי אי דאמר ליה לך חזק וקני הכי נמי הכא במאי עסקינן דאמר ליה לך משוך וקני

he does not acquire ownership<span class="x" onmousemove="('comment',' Either by meshikah or by mesirah. ');">¹⁶</span> 'until he has hired the place it occupies'. Must it [then] be said that Abaye and Raba<span class="x" onmousemove="('comment',' Who hold that ownership may be acquired in reshuth harabbim by mesirah. ');">¹⁷</span>

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