Zohar and Sefer Etz Chaim

Text 1 (Etz Chaim) discusses yesod as a mechanism for drawing down divine influence (nefesh) into Malkhut during union (zivug), emphasizing yesod's role as a conduit in the complex structure of four dimensions of soul. Text 2 (Zohar) describes yesod as one of three ornaments (netzach, hod, yesod) through which the bride (Malkhut) receives blessing, but emphasizes galut—the state where the bride is in 'another side' (sitra achra), nurturing from impurity during exile. Both texts discuss yesod in context of Malkhut's union/blessing, but Etz Chaim focuses on yesod's internal mechanics in receiving divine emanation, while Zohar emphasizes yesod's role during galut when the bride exists in spiritual exile and impurity ('vetisaref beshah'lhavei tiyharah begelutha').