撒母耳記下 3:16 註釋：Rashi

Following and crying. Over the good deed [about to be] leaving him because all those years he thrust a sword into the bed [separating] between him and her and he did not stumble [into sinful intimacy] with her.¹³Shaul did not consider her married to Dovid because he considered Dovid’s Kiddushin having been done using a loan which is an invalid Kiddushin. However, in fact, Dovid had used regular material wealth as his means for Kiddushin which made Dovid halachically married to Michal. This meant that Paltiel Ben Loyish was living in the same house with another man’s wife. For all those years Paltiel made sure never to touch her and thus was spiritually elevated by subduing his lustful inclination. Now that she was leaving, he was saddenned to no longer have the opportunity for this type of spiritual greatness. (Sanhedrin, ibid).