All perfect praise be to Allah, The Lord of the Worlds. I testify that there is none worthy of worship except Allah, and that Muhammad is His slave and Messenger.
If her husband stayed in seclusion with her in the way that is specified in Islamic Sharee’ah, then she must observe the waiting period (of divorce) even if he did not have intercourse with her and even if he is impotent, as the scholars stated.
It is noteworthy that sexual intercourse is one of the most confirmed rights a wife has over her husband. Therefore, if the man is impotent, then he needs to treat himself.
We advise the wife to be patient and help her husband in this issue, and if she fears that he could be impotent, then she may address those who are in charge of the affairs of the Muslim community where she lives so that they would remove the harm she may be afflicted with.
The majority of the scholars are of the view that the man should be given a chance of one full year to treat himself, and if it is proven after this period that he is impotent, then the wife has the choice either to stay with him or to leave him.
Allah knows best.