Intercourse is mentioned in the Quran in these verses:
[2:187] Permitted for you is sexual intercourse with your wives during the nights of fasting. They are the keepers of your secrets, and you are the keepers of their secrets. God knew that you used to betray your souls, and He has redeemed you, and has pardoned you. Henceforth, you may have intercourse with them, seeking what God has permitted for you. You may eat and drink until the white thread of light becomes distinguishable from the dark thread of night at dawn. Then, you shall fast until sunset. Sexual intercourse is prohibited if you decide to retreat to the masjid (during the last ten days of Ramadan). These are God’s laws; you shall not transgress them. God thus clarifies His revelations for the people, that they may attain salvation.
[2:197] Hajj shall be observed in the specified months. Whoever sets out to observe Hajj shall refrain from sexual intercourse, misconduct, and arguments throughout Hajj. Whatever good you do, God is fully aware thereof. As you prepare your provisions for the journey, the best provision is righteousness. You shall observe Me, O you who possess intelligence.
[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.”
[33:49] O you who believe, if you married believing women, then divorced them before having intercourse with them, they do not owe you any waiting interim (before marrying another man). You shall compensate them equitably, and let them go amicably.
To learn more, read the Quran in English.
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