Zohar and Kalach Pitchei Chokhmah

Both texts engage with yesod's role in the sefirot structure, but from different angles. Kalach Pitchei Chokhmah 119:7 emphasizes yesod (היסוד) as a foundation point in Zeir Anpin's building process—describing it as foundational ('רביעית על היסוד') and noting that nukva's nourishment flows upward through binah and into da'at. The Zohar (Achrei Mot 46:9) treats yesod (יסוד) as part of a triadic blessing mechanism (נצח הוד יסוד) flowing to malkhut/kallah, emphasizing yesod's role in transmitting shefa through the sitra achra dynamic. The Kalach Pitchei Chokhmah focuses on yesod's structural role in completing Za'ir Anpin's perfection (לשלמות ז"א), while the Zohar emphasizes yesod's participatory role in a three-sefirot transmission system. Neither directly contradicts the other, but they foreground different functional aspects of yesod's position.