Husband making his wife unlawful for him if she does a certain thing, then wanting her to do it

Q: My wife did something that I hated at the time, so without really thinking I brought my mother and sister in front of my wife and said, "If you do this thing again, you are unlawful for me like my mother and sister." (Part No. 20; Page No. 308)  What is the ruling on this oath and what is the Kaffarah (expiation) for breaking it? What should I do if my wife does what I forbade her to do and my oath becomes effective? Further, what should I do if I want her to do that thing after realizing it benefits us both? Bear in mind that I took this oath 9 years ago. Please enlighten us, may Allah enlighten you.

A: If the case is as you mentioned, you must make Kaffarah for Zhihar (a man likening his wife to an unmarriageable relative) if your wife does what you forbade her to do, whether with or without your approval. Kaffarah for Zhihar is to manumit a believing bondsman and if not, to fast for two successive months. If you cannot fast due to an illness or the like, you must feed 60 needy persons, half a Sa` (1 Sa`=3 kg. Approx.) each from the country's food such as wheat, rice ... Etc. This is approximately equal to one kilo and a half. In addition, you must perform Tawbah (repentance to Allah) and Allah knows best. May Allah grant us success. May peace and blessings be upon our Prophet Muhammad, his family, and Companions.