Kabbalah su Salmi 91:10

You should also be careful from excessive speech with any woman, and especially with one who is a Niddah. Regarding this it says in the first chapter in Tractate Avot: “do not have excessive conversation with a woman, this is referring to his wife and all the more so with the wife of his friend; from this the sages said that as long as one has excessive speech with a woman he causes evil upon himself.” The matter of “causes evil upon himself” is that he draw the Lamed-Yud angel, who is called “evil”, and she defiles him with Keri. Similarly, it says in the Zohar in Beshalach regarding the verse “No evil will befall you, and no plague will come near your tent” (Tehilim 91:10), that when one follows the straight path and acts with holiness, evil—which is the Lamed-Yud angel—and Nega (plague)—which are the plagues of men—do not come close to him. But if, heaven forbid, he does not follow the straight path they defile him. This is how we understand “causes evil upon himself” that he draws to himself the evil Lamed-Yud angel to make him transgress, and eventually he will be lowered to hell to deteriorate the evil that stuck to him. He also causes that he postpones the study of Torah, since the rule used to be that you could not study Torah if you were impure according to Takanat Ezra, and even today there are some people who are strict and do not study Torah when they are impure.