An Adulterer's Wife is Not Forbidden to Him

Question :

If a man committed illegal sexual intercourse and he is married, is his wife forbidden to him, and likewise the woman [i.e., is he (his husband) forbidden to her]?

Answer:

Neither of them is forbidden to the other. They must both repent to Allah, Most Glorified, Most High, with sincere repentance. They must accompany this repentance with true faith and righteous deeds. The repentance will only be sincere if the penitent one renounces the sin and regrets what has already occurred, and makes an honest intention not to repeat it. He must do this while fearing Allah, Most Glorified and in order to glorify Him and hope for His Reward and avoid His Punish- ment; Allah, Most Glorified says:
"And verily, I am indeed forgiving to him who repents, believes (in My Oneness, and associates none in worship with Me) and does righteous good deeds, and then remains constant in doing them (till his death).

And He, Most Glorified says:
"O you who believe! Turn to Allah with sincere repentance!".

And He, the Almighty, the All-Powerful says:
"And all of you beg Allah to forgive you all, O believers, that you may be successful."

Illegal sexual intercourse is one of the greatest prohibited acts and one of the worst of the major sins. Allah has promised the polytheists, those who kill without right and those who commit. illegal sexual intercourse that He will double their punishment on the Day of Resurrection and that they will abide therein (i.e. the Hell-fire), humiliated and in disgrace, due to the seriousness of their crimes and the evil nature of their deeds. Allah, Most Glorified says:
"And those who invoke not any other iläh (god) along with Allah, nor kill such person as Allah has forbidden, except for just cause, nor commit illegal sexual intercourse and whoever does this shall receive the punishment. The torment will be doubled to him on the Day of Resurrection, and he will abide therein in disgrace; Except those who repent and believe (in Islamic Monotheism), and do righteous deeds;

Therefore, it is an obligation upon every Muslim man and woman to stay far away from these great evils and the things that lead to them, and to hasten to honest repentance for what has already passed of such things. And Allah, Most Glorified turns with forgiveness to the truly penitent and pardons them. And Allah is the Granter of success.