Kabbalah su Salmi 34:16

358. “And will do that which is right in His sight.” This refers to the righteous, WHO IS YESOD, as is written: “The eyes of Hashem are toward the righteous” (Tehilim 34:16). We have discussed being wary of a maid servant in accordance with the verse: “And a handmaid that is heir to her mistress” (Mishlei 30:23), WHICH MEANS that it causes the righteous to cleave unto a handmaid.