Likutei Moharan 67:4/ליקוטי מוהר"ן ס״ז:ד׳

14. When Malkhut and glory fall to the brazenfaced, it is then the aspect of TZeDeK (strict justice).

2For the letter tzadi is formed out of a yod and a nun, with the face of the yod turned away from the nun {like this: צ}. [The NuN] is the aspect of Malkhut, as in “may his name yeNoN (be perpetuated) for as long as the face of the sun endures” (Psalms 72:17). [The yod being turned away] alludes to the concealment of the face—i.e., that glory has no face, as explained above.

3This is the aspect of the DaLet: glory/ Malkhut is diminished and niDaLDeLah (impoverished). It then succumbs to the Other Side, namely the brazenfaced.

4And this is the aspect of the KuF: when glory/ Malkhut is diminished and impoverished, it is like a KoF (monkey) compared to a human being. That is, the foot of the letter heh extends so that [the heh] turns into a kuf—i.e., the foot extends below, as in “Her feet descend to death” (Proverbs 5:5) and [the forces of the Other Side] draw sustenance from it.

5Thus when glory/ Malkhut falls into their midst, it is then the aspect of “Her feet descend to death.” Malkhut of holiness has to depend on them for its survival. This is why when the Jewish people have to act forcefully to ensure the survival of our holy religion, we have to receive the authority and sanction [for this] from Malkhut of the idolaters.