The Ruling on Vowing to Stop Playing Cards and Selling Their Cards

Question:
One of them used to play a card game with a group of his companions, then a disagreement arose between them, so he vowed not to play cards with his partner and not to enter his house. What is the ruling, knowing that this partner is one of his relatives, and he is refraining from entering his house for fear of losing his wife to him? Please inform us, may Allah reward you?

Answer:
Playing cards is forbidden, because of the amusement, the evil gambling, the cheating, and the gatherings of fruit [loss] involved in it. This card game should not be played. However, regarding the vow, it is better for him to forbid this thing upon himself, even if he was wronged after the vow, because one should not make a vow in a way that turns the permissible into forbidden. But since he has forbidden the matter, it is forbidden for him. If he plays, he commits a sin of breaking his oath. If he plays, it is a sin of disobedience and a sin of breaking his oath, by engaging in what he swore to abandon. However, selling is not permissible, because these cards are of the same kind as gambling, and that is not permissible.