Peace yyz, I had a cousin in a similar medical condition and marriage situation..his wife left him then filed for divorce.She got custody of course..which isnt always the best for the children..But I hope things work out for the best.. Here are the Quranic surahs that speak of divorce.Hope you find what you are looking for 227,229,230,231,232,236,237;334,37,49;582,3;651;66;5 May Allah be with you!