What is the Shar'i ruling on divorcing a wife whom the husband cannot tolerate, while paying her all her dues, bearing in mind that she suffers from an incurable illness?

Divorce is permissible if there is a need for it, but it is disliked if there is no need. A husband is not considered unjust merely by divorcing his wife. If conjugal life becomes impossible and reconciliation difficult, then divorce is preferable. Among the most important factors for success in marriage are deliberation and careful consideration during selection, and piety during the engagement period. It is important to note the impermissibility of divulging marital secrets, and that fits of anger do not establish the option of annulment unless they reach the level of insanity or harm.