864. See Life
See life with the woman you love, for she is your part in life. One must include life from the tree of life, which is ZA, in this place, which is Malchut, who is called a “woman.” One must also include the quality of day in the night, meaning ZA in Malchut, for “She is your part in life,” since there is illumination of Hochma only in Malchut (The Zohar, Korah, Item 28).
“Everything that your hand can do, do.” This means that one should include the left in the right. “That your hand finds” means left; “to do by your strength” is right.
“Brings down to Sheol [netherworld] and raises up.” Baal HaSulam said that when one feels that he is in Sheol, it causes him to ascend. This means that one comes to a state where he says that it cannot be worse than this, so he gives a heartfelt prayer “and rises up,” meaning then he ascends to Kedusha [holiness].