The idea that the Zohar is conveying is that the five letters of Elohim represent the mystical meaning of the five vessels, Keter, Ḥokhma, Bina, Tiferet, and Malkhut, and the five lights, nefesh, ruaḥ, neshama, ḥaya, and yeḥida. With the ascent of Malkhut to Bina, from the perspective of the vessels Keter and Ḥokhma remained in the level, which correspond to the two letters alef and lamed, while the three letters heh, yod, and mem descended from the level. Conversely, from the perspective of the lights, the two final letters, mem and yod, which allude to the two lowest lights, nefesh and ruaḥ, are the ones that remained in the level, whereas the three initial letters, alef, lamed, and heh, which allude to yeḥida, ḥaya, and neshama, are the ones that left and were negated from the level.