Do not marry idolatrous women unless they join the faith. A maid servant who is a believer is better than an idolatress even though you may like her. And do not marry your daughters to idolaters until they accept the faith. A servant who is a believer is better than an idolater even though you may like him. They invite you to Hell, but God calls you to Paradise and pardon by His grace. And He makes His signs manifest that men may haply take heed.
— Quran 2:221