Reference: ‘Ishratun-Nisaa wa Hill al-Khilaafaat az-Zowjiyyah – Page 210
Question: My husband is very careless about his religion, so he does not pray nor fast. Further, he prevents me from doing any good deeds. He has [now] begun to doubt me such that he has left his job to remain at home and watch over me. So what should I do?
Response: It is not permissible to remain with this man, because he has left off the salaah and as such has become a disbeliever, and it is not permissible for a Muslim woman to remain with him, as Allaah (Subhaanahu wa Ta’aala) says:
{then if you ascertain that they are true believers, send them not back to the disbelievers, they are not lawful [wives] for the disbelievers nor are the disbelievers lawful [husbands] for them}, [Soorah al-Mumtahinah, Aayah 10]
So the nikaah between you and him is invalidated, and there is no nikaah between you two until Allaah (Subhaanahu wa Ta’aala) guides him and he repents and returns to Islaam, and in doing so, your marriage will remain [valid].
As regards your husband, then his actions are wrong. I believe that he suffers from a type of illness, and that being the illness of doubt and [satanic] whispers which afflicts some people in their acts of worship and interaction with other people. And there is nothing that will alleviate it except the remembrance of Allaah (Subhaanahu wa Ta’aala) and seeking refuge in Him and having total trust in Him in that which He decrees for him.
And that which is important with respect to yourself, is that it is obligatory upon you not to remain with your husband, rather, leave him because he is a disbeliever and you are a believer (mu.minah). As regards the husband, then we advise him to return to his religion and seek refuge in Allaah from Shaytaan the outcast and to adhere to beneficial supplications which repel the [satanic] whispers from his heart.
And we ask Allaah to grant him success [over his condition], and Allaah [alone] has the Complete knowledge [of all affairs].