זוהר שמות — דף קעז ע”א

The Sifra di-Tsniuta describes the state that preceded the creation of Atsilout: before faces looked at one another, the ancient kings — secret of the world of Tohu — reigned and died, and the earth was annulled. The parable of the wheat grower teaches that even knowing the fundamental principle, one who does not enter into details misses all the refinements of Torah. The Sifra di-Tsniuta is the book weighed in the balance — the balance without which faces could not look at each other. The White Head — the Atika Kadisha — arranged everything and set face to face all opposing forms.