The further apart they become from one another... The distance between them increases gradually, level by level. In the Partzuf of Atik there is a great connection, with male and female both everywhere in the Partzuf. In the case of Arich Anpin, the male is on the right and the female on the left, but still in one Partzuf. Abba and Imma are male and female and are two Partzufim, yet they emerge as one and dwell as one. Zeir and Nukva are two separate Partzufim, and also their coupling is not continuous. Thus man’s main service lies in bringing about the union of Tiferet and Malchut, respectively Zeir Anpin and the Nukva. Accordingly, the further apart they are from one another...the more it indicates a want of perfection and that work is needed there on the part of the lower creations.