Reference for Bava Batra 300:8
ובכולהו מטלטלי הוי שיור לבר מכתובה דאמקרקעי תקינו רבנן ממטלטלי לא תקון רבנן
must give away all her estate, in writing.<span class="x" onmousemove="('comment',' To a stranger, if she did so she may, on the death of her husband, or if divorced, reclaim her estate. Since no sane person would give away all his possessions and leave for himself nothing, it is obvious that the sole purpose of her presentation of the whole of her estate must have been the prevention of her husband from acquiring ownership thereof. IF, however, she left some portion of the estate for herself, this law does not apply, the gift is valid and she is not entitled ever to reclaim it. ');"><sup>15</sup></span> In all these [cases]<span class="x" onmousemove="('comment',' Lit., 'and in all of them', i.e. the four out of the five cases. ');"><sup>16</sup></span>