The world of tikkun, or rectification, refers to the four worlds of Atzilut (Emanation), Beria (Creation), Yetzira (Formation), and Asiya (Action) in which a rectification occurs for the shattering of the vessels. This shattering occurred as a result of the second constriction (tzimtzum) and the ensuing processes, which caused a discrepancy between the vessels and the lights. The world of tikkun differs from the worlds that came before it primarily in two ways: First, in contrast to the previous worlds, in which the sefirot are structured on a single line or column, in the world of tikkun the sefirot are arranged in the form of three lines: ḥesed, kindness, to the right, din, judgment, to the left, and raḥamim, mercy, in the middle. This is referred to as the “rectification of lines.” Second, the world of tikkun contains the parsa (separation), which is formed as a result of the ascent of Malkhut in second constriction (tzimtzum). This ascent allows for combinations between the levels and the drawing forth of various lights at different times.
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