The reasons for the marriages will become clear once we survey the historical circumstances. When Muhammad was twenty-five years old he married for the first time. His wife, Khadijah, was fifteen years older than him. She remained the only wife of the prophet for the next twenty-five years, until she died (may Allah be pleased with her). Only after her death did the prophet marry other women. Now, it is obvious that if the prophet was after physical pleasure he did not have to wait until he was more than fifty years old to start marrying more wives. He lived in a society in which it was quite acceptable to have many wives. But the prophet remained devoted to his only wife for twenty-five years. When she died she was sixty-five years old.
His later marriages were for various reasons. Some marriages were with the view to help the women whose husbands had been killed while they were defending their faith. Others were with a view to cement relationships with devoted followers like Abu Bakr, may Allah be pleased with him. Yet others were to build bridges with various tribes who were otherwise at war with the Muslims. When the prophet became their relative through marriage, their hostilities calmed down, and much bloodshed was averted.
