Quran 2:223 — The Heifer (Al-Baqarah)

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.

[2:222] 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."

[2:224] Do not subject GOD's name to your casual swearing, that you may appear righteous, pious, or to attain credibility among the people. GOD is Hearer, Knower.