Reference for Bava Batra 80:8
איבעיא להו
The case came before Raba, and he decided that neither party had acquired a title to the property. Those who witnessed this proceeding thought that Raba's reason was because the one deed was a moda'ah in respect of the other.<span class="x" onmousemove="('comment',' The deed of assignment to the son, being drawn up in secret, was not itself enforceable, but was able to render invalid the subsequent assignment to the woman. ');"><sup>8</sup></span> This is not entirely correct. [The secret gift] in that case [did indeed annul the later assignment] because the circumstances showed that the assignment to the woman was made under constraint. Here,<span class="x" onmousemove="('comment',' Where the second assignment is not made under constraint. ');"><sup>9</sup></span> however, it is [evidently] the giver's desire that the one [the latter assignee] should obtain possession and not that the other should obtain possession.<span class="x" onmousemove="('comment',' As is shown by the fact that the deed of gift is written in secret. ');"><sup>10</sup></span> The question was asked [in the <i>Beth Hamidrash</i>]: