Husband swearing of divorcing his wife if he marries his sister to a certain person, then agreeing after knowing the reality of this person

(Part No. 20; Page No. 116)  A: You said that you swore twice that your wife would become unlawful for you if your sister married this person since you had no idea about his being a Multazim or not and because you received some unpleasant information about him. You also mentioned that one of your relatives testified that you divorced your wife, but you could not recall how many times. Finally, you added that the suitor turned out to be a pious person and, therefore, you agreed to give him your sister in marriage and the marriage contract was concluded. If the reality is as you mentioned, you have not broken your oath and you have not divorced your wife by marrying your sister off to the suitor, because you based your oath on misleading information. May Allah grant us success. May peace and blessings be upon our Prophet Muhammad, his family, and Companions.