Midrash for Sotah 49:12
איבעיא להו בעל שמחל על קינויו קינויו מחול או אינו מחול מי אמרינן בקינוי דבעל תלא רחמנא ובעל הא מחיל ליה לקינויו או דלמא כיון דקני ליה מעיקרא לא מצי מחיל ליה
and in this case he does not object; or, perhaps, since [a husband normally] objects, he must object [and divorce her]? — Come and hear: IN THE FOLLOWING CASES A COURT OF LAW CAN GIVE WARNING: WHEN THE HUSBAND IS A DEAF-MUTE OR HAS BECOME INSANE OR IS IMPRISONED. Should you maintain that if the husband desired to retain her he may do so, can the Court of Law do something of which the husband may not approve?<span class="x" onmousemove="('comment',' The Court, representing the husband, would thereby involve him in an act which was contrary to his wish, and this is not legally possible, v. Keth. 11a. ');"><sup>10</sup></span>