What is the ruling of the Sharia concerning how to deal with a sister in Islam who caused disputes and began inciting other sisters to boycott me because my husband works in selling alcohol, knowing that I am striving to convince him to repent?

Love for the sake of Allah between two women callers to Allah Almighty is a legitimate demand, as is maintaining attendance at gatherings of faith. Care must be taken to call to Allah among sisters, and to call the husband to repentance and to cease selling and drinking forbidden alcohol, urging him to limit his sales to what is permissible, and reminding him that sustenance is in the hand of Allah, and that seeking sustenance through forbidden means is a cause for deprivation. Backbiting a caller and her false swearing is forbidden, and it should be addressed by mutual advice or by conveying advice indirectly, along with supplication, patience, and repelling evil with good. Accusing a caller of not liking competition and disrupting lessons requires alerting her to the vastness of work for Allah's religion and the necessity of cooperation, or having a good opinion of her and attributing her mistakes to a lack of understanding of jurisprudence. No one is infallible after the Messengers, and the error of a teacher does not prevent benefiting from him, provided that what he conveys is verified. Eating food from someone whose lawful earnings are mixed with unlawful ones is permissible unless it is known that the specific food item itself is forbidden. It is recommended for a woman to spend on herself from her private money or to urge her husband to spend from lawful money.