Khadijah was convinced that she had finally found a man who was worthy of her, so much so that she initiated the marriage proposal herself. Muhammad (ص) sat to detail all the business transactions in which he became involved on her behalf, but the wealthy and beautiful lady of Quraish was thinking more about her distant cousin than about those transactions.
She simply fell in love with Muhammad (ص) just as the daughter of the Arabian prophet Shu`ayb had fallen in love with then fugitive prophet Moses (ع) as we are told in 28:25-26 of the Holy Qur’an (in Surat al-Qasas).
By the time he was gone, Khadijah sought the advice of a friend of hers named Nufaysa daughter of Umayyah. The latter offered to approach him on her behalf and, if possible, arrange a marriage between them. Nufaysa came to Muhammad (ص) and asked him why he had not married yet. “I have no means to marry,” he answered. “But if you were given the means,” she said, “and if you were bidden to an alliance where there is beauty, wealth, nobility and abundance, would you not then consent?!” “Who is she?!” he excitedly inquired. “Khadijah,” said Nufaysa. “And how could such a marriage be mine?!” he asked. “Leave that to me!” was her answer. “For my part,” he said, “I am willing.” Nufaysa returned with these glad tidings to Khadijah who then sent word to Muhammad (ص) asking him to come to her. When he came, she said to him:
O son of my uncle! I love you for your kinship with me, and for that you are ever in the center, not being a partisan among the people for this or for that. And I love you for your trustworthiness, and for the beauty of your character and the truth of your speech.
Then she offered herself in marriage to him, and they agreed that he should speak to his uncles and she would speak to her uncle, `Amr son of Asad, since her father had died. It was Hamzah, despite being relatively young, whom the Hashemites delegated to represent them on this marriage occasion, since he was most closely related to them through the clan of Asad; his sister, Safiyya, had just married Khadijah’s brother, `Awwam. It was Abu Talib, Muhammad’s uncle, who delivered the marriage sermon saying,
All praise is due to Allah Who has made us the progeny of Ibrahim (Abraham), the seed of Isma`eel (Ishmael), the descendants of Ma`ad, the substance of Mudar, and Who made us the custodians of His House and the servants of its sacred precincts, making for us a House sought for pilgrimage and a shrine of security, and He also gave us authority over the people. This nephew of mine, Muhammad (ص), cannot be compared with any other man: If you compare his wealth with that of others, you will not find him a man of wealth, for wealth is a vanishing shadow and a fickle thing. Muhammad (ص) is a man whose lineage you all know, and he has sought Khadijah daughter of Khuwaylid for marriage, offering her such-and-such of the dower of my own wealth.
Nawfal then stood and said,
All praise is due to Allah Who has made us just as you have mentioned and preferred us over those whom you have indicated, for we, indeed, are the masters of Arabs and their leaders, and you all are worthy of this (bond of marriage). The tribe (Quraish) does not deny any of your merits, nor does anyone else dispute your lofty status and prestige. And we, furthermore, wish to be joined to your rope; so, bear witness to my words, O people of Quraish! I have given Khadijah daughter of Khuwaylid in marriage to Muhammadibn Abdullah for the dower of four hundred dinars.
Then Nawfal paused, whereupon Abu Talib said to him, “I wished her uncle had joined you (in making this statement).” Hearing that, Khadijah’s uncle stood and said, “Bear witness, O men of Quraish, that I have given Khadijah daughter of Khuwaylid in marriage to Muhammadibn Abdullah.”
These details and more are recorded in Ibn Hisham’s Seera. After his marriage, Muhammad (ص) moved from his uncle’s house to live with his wife in her house which stood at the smiths’ market, an alley branching out of metropolitan Mecca’s long main bazaar, behind the mas`a, the place where the pilgrims perform the seven circles during the hajj or `umra.
The marriage was a very happy one, and it produced a lady who was one of the four perfect women in all the history of mankind: Fatima daughter of Muhammad (ص). Before her, Qasim and Abdullah were born, but they both died at infancy.