What are a wife's rights if she seeks divorce from her sexually impotent husband, who concealed his condition before marriage, and what is her 'iddah (waiting period), knowing that he refuses to divorce her and pressures her to seek khul' (divorce at the wife's instance with compensation) believing that this forfeits her rights?

If a husband conceals his inability to have intercourse from his wife, he is sinful for deceiving her. If his impotence is proven, the matter is brought before a Sharia judge who postpones it for one year. If intercourse does not occur thereafter, a divorce is decreed, and the wife must observe the 'iddah (waiting period) and is entitled to the full mahr (dowry).