Reference for Bava Batra 74:2
מכר אילנות ושייר קרקע לפניו פלוגתא דר"ע ורבנן לר"ע דאמר מוכר בעין יפה מוכר אית ליה לרבנן לית ליה
and retains the ground for himself], in this there applies the dispute between R. Akiba and the Rabbis [viz., whether the purchaser is entitled to any ground round the trees]. According to R. Akiba, who holds that the vendor interprets the terms of the sale liberally, the purchaser is entitled [to such ground]; according to the Rabbis, he is not. That R. Akiba would allow the purchaser such ground would not be questioned even by R. Zebid, who said [in the case mentioned above] that he is not so entitled. For this was only where there were two purchasers, the reason being that one can say to the other, 'Just as I have no share in the trees, so you have no share in the ground.' Here, however, the seller interprets the terms of the sale liberally. That the Rabbis in this case do not allow the purchaser such ground would not be questioned even by R. Papa, who said above that he is so entitled. For this was only where there are two purchasers, the reason being that one [the purchaser of the ground] can say to the other, 'Just as the vendor interpreted the terms of sale generously for you,<span class="x" onmousemove="('comment',' By making over the tree and its produce to you in perpetuity. ');"><sup>2</sup></span>