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. And the Muslims are outnumbered three to one. But this results in a Muslim victory. And so you can imagine, the early Muslims start to see this as a turning tide.