One of them was one of his wives, and she was fasting.
But even worse for the long-term treatment of the Jews were a number of inflammatory statements about Jews that Muhammad made that appear in the Koran — which, over the years, stoked Arab/Islamic anti-Semitism.
Muhammad slowly began to build his power base both by the persuasiveness of his faith and the old-fashioned way: by marrying women from important families to gain political advantage.
During the two centuries after Muhammad's death, the laws of Islam were codified in the ).
The principles of Islam were developed over time and, as was the case with earlier men professing to be prophets, not everyone was willing to accept Muhammad's claim to be God's messenger.
Muhammad prayed for and uttered curses instead of asking Allah to guide people.
When he was 12, he visited Syria and had his first exposure to Jews and Christians and apparently developed a respect for these "People of the Book." At 25, Muhammad married a widow named Khadija who was involved in trade and got him involved in it as well.
Some of the revelations included that the world would end, that God would judge humans mercifully if they submitted to His will, and that people should pray to show their gratitude to God.
The people who accepted Muhammad's teachings came to be known as Muslims and their religion , Arabic for "surrender [to the will of Allah]." Muhammad was regarded as the last and most perfect prophet.
The Jews began to distance themselves from Muhammad, however, when he became critical of their not recognizing him as a prophet.
Once it was clear the Jews would not accept him, Muhammad began to minimize or eliminate the Jewish influence on his beliefs.
In 622, Muhammad left Mecca for an oasis then known as Yathrib.