Does the brother bear the sin for his sisters' non-adherence to hijab after he has advised them, or is it incumbent upon him first to provide for them and take care of their material and moral needs?

We thank the questioner for her concern for her needy family, and we remind her that the hijab is an obligation that may not be removed or replaced with short clothes, and that a woman's entire body is considered 'awrah. We also remind her that a woman's work has regulations, and that the brother is more deserving of working and supporting the household. The mother's maintenance is obligatory upon the son and his affluent sisters. Even if the sisters' maintenance is not obligatory upon him, chivalry dictates that he should take care of their affairs. The brother must change the wrong if he sees his sisters displaying themselves inappropriately, through advice and guidance, and by doing so, he absolves himself of responsibility. There is no difference in the obligation of enjoining what is right and forbidding what is wrong between one who fulfills his duties and one who falls short. We advise the questioner to fear Allah and adorn herself with the manners of Muslim women, and we enjoin the brother to fulfill his responsibility towards his mother and sisters.