Part 2: Nevertheless, the Male also enters into the repair of the vessels that ascend through the Female: the Male repairs the right side of all the vessels and Partzufim, while the Female repairs their left side. This enables us to resolve a seeming contradiction in the teachings of the holy ARI of blessed memory. In one place we find that the Nukva elevates the selected parts of BaN while the Male brings down MaH (Mevo Shearim II, Part 3 ch. 4). Elsewhere, however, we find that Abba selects the right-hand parts of BaN and Imma the left, as stated in connection with the mystery of the three days of conception (Etz Chayim, Shaar Orot-Nitzotzot-Kelim ch. 1; see Ramchal, Klalut HaIlan HaKadosh 4:2).
Isaac and the Matriarchs
Kalach Pitchei Chokhmah 64:15