Reference for Bava Batra 36:2

אי בלוקח מאי טעמא דרבנן ועוד מאי טעמא דרבי יוסי אפילו משרה וירקא נמי

R. Papa answered: In the case of a purchaser.<span class="x" onmousemove="('comment',' I.e., after he placed flax — water or sowed mustard in his field, he sold the other half, and the purchaser sowed vegetables or put a beehive close to the boundary. But otherwise, according to Raba, the mustard and the bees would have to be removed from the boundary. ');">²</span>

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