The Source of Holiness in Torah and the World of Tikkun
All unholiness derives from the world of Tohu. Because of the limitless and unstable nature of Tohu, when it descends into this world through many Tzimtzumim-concealments, it ends up breaking down and all that remains is the external aspect of the Sefira, such as kindness or severity, as it exists in unholiness.
However, the idea of Tikkun is that there is a revelation of the Infinite Light of Hashem that includes all opposite aspects, and merges them. Because each Sefira in Tikkun only functions with all the other Sefiros out of its bittul, its perception of the bigger picture of Hashem’s plan, as it descends into this world it remains connected to holiness. Because of this bittul, there is no possibility for a breakdown as it desends.
This is the idea that the Torah that we learn in this world is pure holiness, since it directly reflects its source in Hashem’s Will and Wisdom without any breakdown whatsoever. This is because the Torah is from Tikkun. This is unlike all the physical things in this world that come from Tohu, that do not reflect their source.
