" Since his sister had wisely neglected to inform him of this, he’d had no idea. In a fury, he went storming into her house, ready to lay about him with fists and whip, only to find a small group sitting peaceably on the floor, chanting verses from the Quran. They continued calmly despite Omar’s bursting in, disconcerting him enough to make him stand still. The musicality of the verses began to reach through the fog of rage and alcohol, and he sat down to listen. “How fine and noble are these words,” he said when they had finished, and asked to be taken to Muhammad to make the shahada, the formal pledge of belief. He’d never touch alcohol again. "

― Lesley Hazleton , The First Muslim: The Story of Muhammad