Reference for Yevamot 113:5
אביי לא אמר כרבא קנין דאישות מקנין דאישות ילפינן ולא ילפינן קנין דאישות מקנין דעבדים
[<i>terumah</i>] upon his Canaanitish bondmen and bondwomen.<span class="x" onmousemove="('comment',' As he may confer the privilege in that case he may also confer it upon the woman he betrothed. ');"><sup>15</sup></span> Abaye did not give the same explanation as Raba because matrimonial <i>kinyan</i> may be inferred from matrimonial <i>kinyan</i>, but matrimonial <i>kinyan</i> may not be inferred from the <i>kinyan</i> of slaves. And Raba does not give the same explanation as Abaye because there<span class="x" onmousemove="('comment',' Where the incapacity occurred after marriage. ');"><sup>16</sup></span> it is different, since she has already been eating it previously.<span class="x" onmousemove="('comment',' Prior to the man's incapacity. This, therefore, provides no proof that a man who is already incapacitated can also confer the privilege. ');"><sup>17</sup></span> And Abaye?<span class="x" onmousemove="('comment',' How does he reconcile the difference in two cases? ');"><sup>18</sup></span>