Ruling on the one who says: “My wife is forbidden to me”

This is a message received from a questioner who used the code name “your brother in Islam” from Sudan. He says in his message: I am a young man of twenty-eight years old. I got married this year to complete my religion, but unfortunately, I swore by saying: “It is forbidden to me.” I was not intoxicated, but I swore while not intending to forbid my wife to myself. I wept and regretted what happened to me intensely. I began to seek Allah’s forgiveness and call upon Him in every prayer to forgive me, and I gave charity by feeding sixty poor people so that Allah would forgive me for this sin. So I ask about the ruling on this? May Allah reward you.
Answer: This requires detail: If you said, “It is forbidden to me” regarding your wife so-and-so, or you intended this absolute statement, then this is zihar according to the most correct opinion of the scholars, and upon you is the expiation for zihar, just as if you said, “She is to me like the back of my mother,” or you said, “She is to me like my mother,” meaning: forbidden, or you said, “She is forbidden to me,” or: “You are forbidden to me,” or the like. Upon you is the expiation for zihar, which is ordered: First, freeing a believing slave if you are able to do so. If you are not able, then fasting two consecutive months. If you are unable to do that, then feeding sixty poor people before you touch her, before you approach her. For each poor person, half a sa' of dates or rice or the like of the food of the land. Half a sa' is one and a half kilograms for each person, thirty sa' in total, before you have intercourse with her. The matter is in order as you heard: First, freeing a slave. If you are unable, then fasting two consecutive months, sixty days. If you are unable, you feed sixty poor people, each poor person receiving half a sa' of the food of the land, dates or otherwise. If you feed them dinner or lunch, that suffices, along with repentance, seeking forgiveness, and not returning to such a thing; because forbidding a woman or zihar from her is a reprehensible matter that is not permissible. So whoever does this, upon him is repentance and upon him is the aforementioned expiation. Yes.
The presenter: May Allah reward you. And what if he did not intend zihar and does not know the ruling on zihar?
The Shaykh: As for if it is conditional, such that he said, “It is forbidden to me to speak with so-and-so,” or “It is forbidden to me to visit so-and-so,” and his intention is to prevent himself from this thing, then its ruling is the ruling of an oath. There is an expiation for an oath: feeding ten poor people or clothing them. It has the ruling of an oath. Yes.
The presenter: May Allah reward you.