Reference for Bava Batra 305:7
אמר אמימר לית הלכתא כוותיה דרבא אמר ליה רב אשי לאמימר פשיטא דהא אמרי נהרדעי הלכתא כוותיה דרב מהו דתימא מחיים מודי רב קא משמע לן
Amemar said: The law is not according [to the view] of Raba. Said R. Ashi to Amemar: [Is not this] obvious, seeing that the scholars of Nehardea distinctly said [that] the law was in accordance with [the decision] of Rab! — It might have been assumed [that where the entry was]. 'from life', Rab agrees,<span class="x" onmousemove="('comment',' That, unlike 'in life', possession is acquired at once as if the gift had been made by a man in good health. ');"><sup>16</sup></span> hence it was necessary to teach us [otherwise]. There was a certain [person] who once came [with an enquiry]<span class="x" onmousemove="('comment',' To ask For R. Nahman's ruling on the legality of withdrawing a gift in the deed of which was enacted 'in life and in death', ');"><sup>17</sup></span>