The Islamic sexual morality is also fundamentally different from the new sexual morality in a sense that it does not accept the concept of free sex. Islam aims at teaching its followers not to suppress their sexual urges, rather to fulfill them but in a responsible way.
Islam recognizes the sexual needs of human beings and believes that the natural instincts should be nurtured, not suppressed. Islam says that the biological parts of our body have a purpose, they have not been created uselessly. No text in Islam can be found to equate sex with inherent evil or sin; whatever has been taught by the Qur'an, Prophet Muhammad and his Ahlu'l-bayt points in the opposite direction.
Sex has been openly recommended in the Qur'an, "When they [i.e., the wives] have cleansed themselves [after menstruation], you go into them as Allah has commanded." (2:222) The phrase 'commanded you' does not refer to any legislative command; that is, it does not mean that as soon as a person's wife becomes clean from her period, he should immediately have sex with her. It is a creative command and refers to the sexual urge which Allah has placed in our nature. And when the sexual urge is counted as a creative command of God, then who can associate it in any way with sin and evil?!
Marriage and sex are among the signs of God's power and blessings. The Qur'an says, "And among His signs is that He has created for you spouses from among yourselves so that you may live in tranquility with them; and He has created love and mercy between you. Verily, in that are signs for those who reflect."(30:21 )
The Prophet and the Imams of Ahlu'l Bayt also encouraged their followers to marry and to fulfill their sexual urges in lawful ways as can be seen from the following:
The Prophet said, "No house has been built in Islam more beloved in the sight of Allah than through marriage." (Wasa'il, vol. 14, p. 3)
The Prophet said, "O you young men! I recommend marriage to you." (Wasa'il, vol. 14, p. 25)
Imam 'Ali said, "Marry, because marriage is the tradition of the Prophet. The Prophet said, 'Whosoever likes to follow my tradition, then he should know that marriage is from my tradition.'" (Wasa'il, vol. 14, p. 3-4, 6)
Imam Riza said, "Three things are from the traditions of the messengers of God: using perfume, removing the [excessive] hair and frequently visiting one's wife." (Wasa'il, Vol. 14, p. 4)
Ishaq bin 'Ammar quotes Imam Ja'far as-Sadiq as follows: "Loving women is among the traditions of the prophets." (Wasa'il, Vol. 14, p. 9)