In the latter case the attraction is dulled by custom and familiarity.
69.

Exogamy with female descent.
The exogamous clan, with female descent, was, however, an unstable social institution, in that it had no regular provision for marriage nor for the incorporation of married couples.

The men who associated with the women of the clan were not necessarily, nor as a rule, admitted to it, but remained in their own clans.

How this association took place is not altogether clear.

At a comparatively late period in Arabia, according to Professor Robertson Smith, [163] the woman would have a tent, and could entertain outside men for a shorter or longer period according to her inclination.