Does the Shariah obligate the brother's wife to wear an abaya or jilbab in front of her husband's brothers? What is the ruling on one who allows his wife to wear trousers and a hijab, and to pluck her eyebrows and tattoo them in front of non-mahram men? And does the Shariah obligate her not to wear trousers and not to pluck her eyebrows?

The husband's brothers are non-mahram, and it is forbidden for a woman to display her adornment to them or to be expansive in her speech with them. Adherence to Sharia guidelines is obligatory. Tattooing the eyebrows and plucking them (namṣ) are forbidden. The husband must prevent his wife from engaging in forbidden acts such as plucking and removing the hijab.