The Happy Marriage
Abu Talib had a big family. He spent a lot of his money on the poor. In time, he too became poor. Our Master Muhammad [s] felt that he had to help his uncle. So, he decided to take Khadijah's goods to Sham.
The task was successful. Our Master Muhammad [s] gave the trusts to their owners. This made Khadijah think of him. So, she asked him to marry her.
Abu Talib was very pleased with that suggestion. So, he, a group of Bani Hashim, and Hamza bin Abdul Muttalib, our Master Muhammad's uncle, went to ask for Khadijah's hand from her family. Abu-Talib said:
"Praise be to Allah who has made us of Ibrahim's and Ismael's sons, made a protected house and a safe sanctuary for us, and made our country blessed."
Then he added:
"My nephew Muhammad bin Abdullah is the best and greatest man of all the Quraish. Besides, he's better than money because money's perishable. He likes Khadijah and she likes him. By Allah, he'll be of great importance. Khadijah's dowry is of my money."
Muhammad [s] and Khadijah got married.
The years passed. Allah gave Abu Talib a new baby. The baby's name was Ali.
Our Master Muhammad [s] wanted to relieve his uncle's worries. So, he went to his uncle's house to take Ali to his house.
source : sibtayn