Kabbalah for Exodus 32:7

And Moses wanted to bring the proselytes under the wings of the Shechinah and presumed that they also were drawn down from (Malchut, which is) the (small) Hei. Thus, he drew down (the Mochin of) this (small) Hei of Abraham. (The proselytes) brought upon him descent, as it is written: "Go, get you down, for your people...have become corrupt" (Shemot 32:7), (meaning, the caused Israel to sin with the Golden Calf). They did not receive (the Mochin of) the small Hei, with awe of the letter Yud and with love of the letter Hei. So he descended from his grade, which is the letter Vav.