Commentary for Kiddushin 54:2
אמר רב אחא בריה דרב איקא תדע שאילו מסר לו עשר בהמות באפסר אחד ואמר ליה קני מי לא קני א"ל מי דמי התם איגודו בידו הכא אין איגודו בידו
For Samuel said: If A sells B ten fields [situate] in ten countries, as soon as B takes possession of one, he then acquires all. Said R'Aha, son of R'Ika: The proof is: if he delivered him ten cows [tied] by one cord,<span class="x" onmousemove="('comment',' Lit., 'bit'.');"><sup>1</sup></span> and said to him, 'Acquire them': would he not acquire then, [all]?<span class="x" onmousemove="('comment',' E.g., if he seized one of them by its hair (Tosaf.) . [Or by taking hold of the cord, on the view (supra 25b) , that large cattle are acquired by Mesirah (Tosaf. Ri) ].');"><sup>2</sup></span>
Daf Shevui to Kiddushin
According to R. Aha son of R. Ika the proof from the baraita’s rule is that one obviously can acquire ten cows tied together by one cord. So too one can acquire ten pieces of land by buying one of them.
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Daf Shevui to Kiddushin
Someone unknown responded to R. Aha telling him his comparison is not justified. In the case of the cows, he has one tie connected to all of them. In the case of the land, there is nothing connecting him to the other pieces of land.
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