Reference for Bava Batra 93:8

בשלמא בן שחלק איצטריך סלקא דעתך אמינא אחולי אחיל גביה קמ"ל דלא אלא אשה שנתגרשה פשיטא לא צריכא

but now I know that this is not so. But that the divorced woman [becomes a stranger to her former husband]<span class="x" onmousemove="('comment',' Since they presumably are hostile to each other, and therefore are not likely to have allowed their land to be occupied by the other without protest. ');">¹⁵</span> is surely self-evident? — No. The rule is required

Jastrow

Jastrow