The desire in the female for the male
is so that they may perfect each others work.
God put desire in man and woman
in order that the world
should be preserved by this union.
God instills the desire of every part of the other:
from their union, creation results.
And so night and day are in mutual embrace:
they appear to be opposites, even enemies,
but the truth they serve is one,
each desiring the other like kin,
for the perfection of their work.
Both serve one purpose, for without night,
human nature would receive no income:
what then could day expend?
Mathnawi III, 4414-4420