What is the ruling of Islamic law regarding a wife's request for divorce from her husband after discovering his infidelity, and his refusal to grant it to keep her tied to the children, especially after her care for him during his health crisis?

It is the wife's right that her husband should not be absent from her for more than six months except with her permission. She has the right to request his return or to move with him. If she is harmed by his absence, she has the right to demand a divorce. If the husband refuses, she can refer her case to the Sharia judge. However, the wife should be patient and try to reconcile, seeking help from Allah and wise people. Both spouses must treat each other kindly and not forget the favors between them, and the husband's family should work to ensure the continuation of their marital life. It is forbidden for a Muslim to establish an illicit relationship with a foreign woman, and whoever falls into this must repent immediately.