The ruling on a woman uncovering her face before her husband's brothers and her sister's husbands, by her husband's order?

Question:
Your Eminence the Shaykh! The questioner says: My husband wants me to uncover my face in front of his brothers and his sisters' husbands when they visit us. I refuse, and he says that I asked some scholars and they said the khimar (head covering) is not obligatory. A problem has arisen between us that has reached the point of divorce. Please advise us on this problem, may Allah reward you with good?

Answer:
This is a mistake on the part of your husband. You have no right to reveal [your affairs] to his brothers, nor regarding the marriages of his sisters. Rather, you must cover up [the matter]. Allah, Glorified and Exalted is He, says: It is obligatory for a woman to maintain her hijab from those who are not her mahram (relatives one may not marry). A husband who orders his wife to reveal herself or to speak ill [of others] — it is not permissible for the woman to obey him in that. Obedience is only in what is right; there is no obedience to a creation in disobedience to the Creator. He should cover up [the matter], use kind words, and adopt a good manner. So we ask Allah to guide him and protect him from Satan. Yes.