5. By contracting most of these marriages, the Prophet meant to eliminate the caste system, the racial and national vanities, and the religious prejudices. He married some of the humblest and poorest women. He married a Coptic girl from Egypt, a Jewess of a different religion and race, a negro girl from Abyssinia. He was not satisfied by merely teaching brotherhood and equality but he meant what he taught and put it into practice.
6. Some of the Prophet’s marriages were for legislative reasons and to abolish certain corrupt traditions. Such was his marriage to Zaynab, divorcee of the freed slave Zaid. Before Islam, the Arabs did not allow divorcees to remarry. Zaid was adopted by Muhammad and called his son as was the custom among the Arabs before Islam. But Islam abrogated this custom and disapproved its practice. Muhammad was the first man to express this disapproval in a practical way. So he married the divorcee of his "adopted" son to show that adoption does not really make the adopted child a real son of the adopting father and also to show that marriage is lawful for divorcees.
Incidentally, this very Zaynab was Muhammad’s cousin, and had been offered to him for marriage before she was taken by Zaid. He refused her then, but after she was divorced he accepted her for the two legislative purposes: the lawful marriage of divorcees and the real status of adopted children. The story of this Zaynab has been associated in some minds with ridiculous fabrications as regards the moral integrity of Muhammad. These vicious fabrications are not even worth considering here (see Qur’an, 33:36,37,40) These are the circumstances accompanying the Prophet’s marriages. For the Muslims there is no doubt whatsoever that Muhammad had the highest standards of morality and was the perfect model for man under all circumstances. To non-Muslims we appeal for a serious discussion of the matter. They, then may be able to reach sound conclusons.
Marriage and Divorce
One of the most distorted concepts of Islam is the real meaning of marriage. In addition to the brief statement made earlier in this survey, a few more remarks may be useful. Marriage in Islam is not a business deal negotiated by two partners, nor is it a secular contract whereby material benefits and obligations are evaluated in contrast to one another. It is something solemn, something sacred, and it would be erroneous to define it in simply physical or material and secular terms.