Wa `alaykum As-Salamu wa Rahmatullahi wa Barakatuh

 

She has full right in dowry. When a man accused his wife of adultery and they both separated based on the practice of mutual imprecation of Li`an (It consists of the Islamic magistrate (or his equivalent) telling the husband to repeat four times, “I testify by Allah that I am truthful in charging her with adultery”,) the man asked for the dowry he paid for his wife. The Prophet said, ” “You are not entitled to take back any money. If you have told the truth, the Mahr that you paid, was for having sexual relations with her lawfully; and if you are a liar, then you are less entitled to get it back.” (Al-Bukhari)

 

Almighty Allah knows best.