What is the ruling on a fornicatress marrying before her repentance if she is unsure about the fornication, knowing that her husband is unaware of what happened, and she is pregnant by him? Is she obligated to inform him? Is the prohibition of marriage limited to those who are known for fornication, or does it include everyone? And is the continuation of the marriage considered fornication?

The adultery (zina) that incurs legal rulings is defined by the complete insertion of the glans into the vagina. If what occurred was merely foreplay to adultery, or if there is doubt about its occurrence, then the rulings of adultery are not incurred, as the fundamental principle is that "certainty is not removed by doubt."

If the marriage was concluded with all conditions met, such as the presence of a guardian and witnesses, then it is a valid marriage. The wife must then engage in normal marital relations with her husband, conceal her sin, and not inform anyone about it.

The prohibition of marrying an adulteress applies to any woman who has actually committed adultery, and is not limited to those who are widely known for adultery. There is a jurisprudential disagreement regarding the ruling on marrying an adulteress before she repents.