All praise is due to Allah, the One Who says:
[And do not come near to the unlawful sexual intercourse.] (Al-Israa' 17:32)
And peace and blessings be upon His slave and Messenger Muhammad, who said, "When a man commits fornication, faith departs from him and there is something like a canvas roof over his head; and when he quits that action, faith returns to him" (Abu Dawud 40:4673).
Undoubtedly, all Muslims are aware of the prohibition of adultery and fornication. However, many of us live in a Western society where this crime has become widespread and commonly accepted. This crime has even crept into some Muslim homes to the extent that we find some who are proud to see their son entering the house with a girl accompanying him. This article will define adultery and fornication in Islam; it will discuss the punishment for them and the status of one's marriage to one who commits either of them; and it will advise how to repent and how to protect yourself from them.