Komentarz do Powtórzonego Prawa 25:11

כי ינצו אנשים WHEN MEN STRIVE TOGETHER, they will in the end come to blows, as it goes on to state “[and the wife approacheth to deliver her husband]” out of the hand of him who smiteth him: No good can come out of a quarrel (Sifrei Devarim 292:1; cf. Rashi on v. 1).

וקרבה אשת האחד להציל את אישה, [the author, obliquely, established a conceptual link between this paragraph and that preceding it. Ed.] Even though the Torah had not only given permission to the widow in the yevamah legislation to publicly embarrass her brother in law for failing to do his duty by marrying her, but had even commanded her to do so, in this instance, when a wife tries to save her husband’s life by resorting to tactics which embarrass his opponent she is punished for doing so.

להציל את אישה, in order to save her husband, etc. It is interesting that instead of writing: "the wife stretches out her hand in order to save her husband," the Torah reversed the order by writing: "in order to save her husband she stretches out her hand." This teaches that if the woman had no other way of saving her husband except by grabbing his adversary's private parts she is not culpable. She is only free from guilt if the adversary was clearly threatening the life of her husband, not if he merely engaged in a brawl with him. The Torah managed to convey all this by writing the word "to save (the life of) her husband" prior to describing what the woman actually did.