Quran 2:222 — The Heifer (Al-Baqarah)

They ask you about menstruation: say, "It is harmful; you shall avoid sexual intercourse with the women during menstruation; do not approach them until they are rid of it. Once they are rid of it, you may have intercourse with them in the manner designed by GOD. GOD loves the repenters, and He loves those who are clean."

[2:221] Do not marry idolatresses unless they believe; a believing woman is better than an idolatress, even if you like her. Nor shall you give your daughters in marriage to idolatrous men, unless they believe. A believing man is better than an idolater, even if you like him. These invite to Hell, while GOD invites to Paradise and forgiveness, as He wills. He clarifies His revelations for the people, that they may take heed.

[2:223] Your women are the bearers of your seed. Thus, you may enjoy this privilege however you like, so long as you maintain righteousness. You shall observe GOD, and know that you will meet Him. Give good news to the believers.