Wikipedia is really funny, I mean, what you stumble upon...Nikah Ijtimah "is a form of polyandry that existed in the Pre-Islamic period in the Arabian peninsula." I knew of the purported existence of polyandry in pre-Islamic Arabia (see No God but God), but this, I did not know of:
...there were four types of marriage during the Pre-Islamic period of ignorance. One ... type of marriage was that a group of less than ten men would assemble and enter upon a women, and all of them would have sexual relations with her. If she became pregnant and delivered a child and some days had passed after her delivery, she would send for all of them and none of them could refuse to come, and when they all gathered before her she would say to them "You (all) know what you have done and now I have given birth to a ...
