Is it permissible to boycott sisters who display their adornment?

Question:
The questioner says: I have sisters in the house who display their adornment, wear pants, and go out wearing them. However, some of them pray. I have explained some of this to them and that it is forbidden, and I am afraid they will attack me. Is it permissible for me to boycott them while we live in the same house?

Answer:
This is due to poor upbringing of the girls; this is poor upbringing and negligence. It is obligatory for the guardians of the girls to raise them with hijab, modesty, and decency, and to oversee them and compel them to wear hijab, because they are responsible for them. Allah, Mighty and Majestic, says: A woman needs guardianship, so it is obligatory for the woman’s guardian to compel her to wear hijab and to discipline her if she disobeys.
As for your position, as long as the father is present, the responsibility is on him. But your position is one of advice: you advise them and warn them of Allah, Mighty and Exalted. If they do not comply, and boycotting them serves as a deterrent for them—if the boycott deters them and has an effect on them—then you boycott them. You may boycott them until they turn to Allah, Blessed and Exalted is He. Yes.