3.      Preservation of Sunnah

The ‘Mothers of the Faithful’ played an important role in conveying the Sunnah of the Prophet – the second source of Islamic Law along with the Quran.  Nothing of the Prophet’s life was hidden from them, and they had permission to convey anything they knew about his personal life.  Between themselves, they preserved more than three thousand hadeeths[1] of the Prophet.  Aisha narrated 2,210 hadeeths, while Umm Salama reported 380.  The remaining wives reported between five and sixty hadeeths.  Umm Habeeba and Hafsah reported 60 each, Maimoonah reported 46, and Zainab reported 11.[2]

4.      Breaking Pagan Traditions & Putting the Law into Practice

One of the Prophet’s marriages was contracted to reject the pagan practice of adopting children and passing onto them the adopting parent’s genealogy and name, investing them with all the rights of biological children.  The Quran says:

"God did not make your adopted son as your own sons.  That is your own saying, the words of your mouths; but God speaks the truth and shows the right way."(Quran 33:4) 

This tradition was so deeply rooted that the Prophet was hesitant to marry Zainab, the wife of his adopted son, Zaid, until God revealed:

"Would you hide, O Muhammad, within yourself that which God was going to bring to light anyway?  Would you fear the gossip of the people, while it is God who is more worthy of being feared?" (Quran 33:37) 

Thus, Prophet Muhammad married Zainab to reject this pagan custom.  In this regard, God said:

"So when Zaid dissolved her marriage-tie, We gave her to you as a wife, so that there should be no difficulty for the believers about the wives of their adopted sons, when they have dissolved their marriage-tie.  And God’s command is ever performed." (Quran 33:37)

5.      Binding Tribes by Marriage to Avoid Violence & Bloodshed

His marriage to Juwairiyah and Safiyah were to bind warring tribes to avoid future violence and bloodshed. The Arabian Peninsula was one distraught by decades of war. Tribes fought and sought revenge for petty instances for years, and it was extremely difficult to strike truces between them. Through the acceptance and spread of Islam, peace was struck between warring tribes, but many might have still harbored ill feelings, especially those who had not yet accepted Islam. Through marriage, tribes had to honor their truces, and many of these ill feelings were resolved due to pride in the marriage of a member of the tribe to the Prophet.  By marrying into the families of key allies and vanquished enemies, he laid the ground work for cooperation between different tribes.

6.      Protection of Widows and Orphans

As discussed previously, most of the wives of the Prophet were widows whom he married during times of war to protect them.  The latter life of the Prophet consisted of years of wars for the nascent Muslim nation, when Muslims had to fight in self-defense to protect their lives and the religion.  Consequently, hundreds of his companions were killed, leaving behind widows and orphans without anyone left to care for them.  Prophet Muhammad set the example for the surviving companions to remarry the widows in order to support them, so most of his wives were widows.

Conclusion

Ethics and morals should never be judged on the premises of parochial societal norms; rather, they should be assessed according to clear undisputed precedential standards.  Throughout the history of humanity, polygamy had been a norm of society. Even today, there are many cultures other than Islam in which it is encouraged.  But even if one does not understand the nature of polygamy due to various environmental and cultural influences, a deliberately objective view should be sought.  When anyone scrutinizes the life of the Prophet impartially, the honest researcher will surely conclude that his reasons for marriage were ones clearly meant to strengthen the Muslim community, whether by the spread of knowledge, the care of widows, or cementing alliances with different tribes of Arabia.