Oath on something that is not permissible

Question:
She mentioned that she has been married for twenty-five years, and her husband married another woman because of the desire for children. So she swore that she would not return to the marital home, but she did return to him, even though he had refused to let her seek treatment for this issue?

Answer:
Answer: Yes, if she swore that she would not return to the marital home, she has sworn on something that is not permissible, because it is obligatory for her to return to the marital home. And whoever swears an oath and then sees something better than it, let him expiate for his oath and do what is better, as the Prophet (peace and blessings be upon him) used to do. He said (peace and blessings be upon him): “By Allah, if Allah wills, I do not swear to anything and then see something better than it except that I expiate for my oath and do what is better.” In another narration: “Except that I do what is better and expiate for my oath.” And Allah (Exalted and Majestic is He) said: {And do not take your oaths as an excuse to do good and to fear Allah and to make peace among people. And Allah is Hearing and Knowing}. So Allah (Exalted and Majestic is He) forbade a person from swearing that he will not do good, or that he will not do obedience. And if he swears, he should not persist in this oath, but rather he should contradict it, do good, and expiate for his oath. {Allah has prescribed for you the release from your oaths, and Allah is your guardian}. Allah (Glorified and Exalted is He) has made things easy for His servants, but they make things difficult for themselves. Yes.