And it's under Abu Talib that Muhammad learns his trade as a merchant and as a trader. Now later on, we talk about Khadijah, who is a wealthy widow in Mecca, and she employs Muhammad, and according to Islamic tradition, is impressed by him, and proposes to him. And she's 15 years older than Muhammad. This is her third marriage, and Muhammad marries her. She's a significant figure in Islam, not because she is Muhammad's first wife, but also because she is the first Muslim. Now as you can see, Muhammad and Khadijah, they have several children, and I list one of them here, Fatima, because Fatima ends up marrying Abu Talib's son, Ali. And Ali is the Ali that we're talking about where the word Shia, Shiatu Ali, comes from, party of Ali, because Ali is considered the second Muslim.