Musar su Salmi 36:12

The pride of a man in his body or person is, in turn, divided into two classifications, one good and one evil. And this is the pride of a man in his body which is evil. When arrogance becomes strong in the heart of a man, then it rules over him from the top of his head to the soles of his feet. In his head and in his throat, as it is written: "Because the daughters of Zion are haughty, and walk with stretched-forth necks…" (Is. 3:16). In his hands and in his feet, as it is written: "Let not the foot of pride overtake me, and let not the hand of the wicked drive me away" (Ps. 36:12).

The authors of Keli Chemdah and Megaleh Amukos write in a similar vein, that when a man chooses to sin with a certain object the angel appointed over it shouts, “Let not the foot of egoism overtake me, nor the hand of the wicked move me away!” (Tehillim 36:12). In short, the power of a transgression is that it summons the Sitrah Acharah and from that moment onward the scene of the crime becomes a place of danger.