My family has a store in New York and and it’s my mother and she sells beer and I work there only to help out because it’s in need of help but I don’t get paid for it. Is it still haram?

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If you are carrying, delivering…etc, then you are doing haram. You should not assist your family in doing so. And if selling alcohol items is the only income source of the family, then it is not permissible to consume any thing bought with this money, except if it purchased by credit card.