The Zohar, Chapter “BeShalach (When Pharaoh Sent),” Item 110: …it is written, “This is the great sea.” And the holy animal is over them, the Nukva from Chazeh de ZA and above, receiving from the three animals of ZA, and she is the fourth animal, from which everyone receives, even the Merkavot of the Sitra Achra and the nations of the world. And all the masses and the camps journey under her hand, going by her word and pausing by her word. When she goes, everyone goes, since everyone is gripped to her.
We study only the relationship between Zeir Anpin and Malchut, where Zeir Anpin is the Creator (Kadosh Baru Chu) and Malchut is the Shechina, the sum of the souls. We are parts of Malchut and to the degree we become included in Malchut, meaning desire to unite with each other, we merit a connection with Zeir Anpin and then he influences us.
Obviously, everyone receives from Nukva, Malchut of the World of Atzilut, but every person receives to the degree of his unity with her, the degree of his inclusion in the connection between Nukva and Zeir Anpin.
Nukva and Zeir Anpin are present from the smallest possible state, this world, until the perfect state, the World of Infinity, the total correction of their connection. To the degree a person is included in Nukva, from her he attains all the degrees of the ladder of spiritual ascent.
Therefore, we don’t need anything else but to unite with Nukva. The degree of our unity with Nukva, Malchut of the World of Atzilut, is what determines the height of our degree on the ladder of the worlds, until the final correction.
From the 2nd part of the Daily Kabbalah Lesson 10/23/10, The Zohar