A human being is an intermediary between matter and form. Through him, the lower and upper worlds are joined, and G‑d’s Names Havaye-Adnus are united. Together, these have the numerical value of 91, “tzo” from the word “tzon” (צא – צאן).³, Vayikra: “I heard that tzon (“flock”) is the Unification of tzo and nun. That is, the Union of the Holy One and His Shechina.” Whereas the blessing that pours forth from there is the letter nun (ן). Tzafnah Paneach, p. 89c

footnotes: ³ See Degel Machane Ephraim