He isn't just continuing to have his revelations, according to Islamic tradition, but he essentially rules over Medina and governs it. So he's starting to become both a political ruler and a spiritual ruler. Now, the Quraysh in Mecca are still not happy because Muhammad is continuing to preach and he's continuing to get more and more followers. And so you start having, at first, a series of skirmishes between the armies of the Quraysh, or the members of the Quraysh, and some of the early Muslims. But these skirmishes eventually emerge into full-on conflict. And here are some of the significant battles that occurred between the Quraysh tribe, remember, that's Muhammad's own tribe, and the early Muslims, the early followers of Muhammad and his revelations. So most famously, perhaps, you have the Battle of Badr, because this is the first time that you have a significant confrontation between a very small, you wouldn't even necessarily call this an army, a small group of Muslims, roughly a little over 300, according to Muslim tradition, versus 900, or a little over 900, on the Quraysh side.