What is the religious ruling on the marriage of a young man, not yet 18 years old, to a 16-year-old girl, after his father committed adultery with her, and her family collected money and wrote it over to the girl?

Adultery is one of the grave sins, and its perpetrator must offer sincere repentance. A girl who has reached the age of nine is considered a woman, and caution must be exercised regarding leniency in the mixing of girls with men. The marriage of a son to a woman with whom his father committed adultery is a matter of dispute. The more preponderant view is that it is permissible if the marriage is concluded, while advising the wife to be cautious and reserved with her husband's father and not to be in seclusion with him.