In the same manner that we explained the two structures of male and female in the head of the partzuf called Ab, these two structures emerge also as the head of Sag, in exactly the same way, only in that case the structure of the male is nearly at the level of Ḥokhma. This is because it is formed from the trace of enclothing of the third level, incorporating the opacity (ovyut) of the second level, while the structure of the female is at the structural height of Bina, that is, formed from the opacity of the second level. Here too the name of the partzuf is attributed only to the structure of the female, because the male is a head without a body.
Kingdom of Ab
Petichah LeChokhmat HaKabbalah 45:1