Musar su Levitico 18:6

“No man shall approach anyone of his own flesh” (Leviticus 18:6). Any approaching of the flesh is forbidden, such as touching the hands of a married woman. And its explanation [in the continuation of the verse], “to uncover nakedness,” is because approaching leads to nakedness (forbidden intercourse). And should you say in your heart, “Where is it found in Scripture that the Torah made a fence, that you should say that it forbade the touching of hands, that it should be a sin” - we will answer you [this] word: Behold the commandment of the nazirite in which one’s main separation is lest he forget the Lawmaker or be fooled by a spirit of licentiousness, [and yet] the Torah forbade him from [consuming] everything that is from the vine of wine. And all of that is as a fence to distance him from drinking wine. And likewise did our Rabbis say in the Midrash (Exodus Rabbah 16:2).

He who wants to become completely clean of this sin will also require a laboring which is not small. For included in the prohibition is not only the act itself but even all that draws one close to it. This is explicitly stated in scripture: "do not draw near to uncover nakedness" (Vayikra 18:6).