The ruling on a woman gathering her hair behind her head in a way that forms a rounded shape visible behind the hijab.

Al-Hawini: What is the ruling on a woman gathering her hair above her neck and behind her head in a way that forms a rounded shape, given that when a woman wears the hijab, the shape of the hair is visible from behind the hijab?

The Shaykh : This is a sin that many women who wear the hijab fall into, where they gather their hair behind their heads so that it protrudes from behind them, even if they place the hijab over it. This contradicts one of the conditions of the hijab that I compiled in my book, "The Hijab of the Muslim Woman from the Book and the Sunnah." One of these conditions is that the garment must not outline a limb or any part of the woman's body. Therefore, it is not permissible for a woman to roll her hair behind her head or on the side of her head in a way that it protrudes like this, so that it appears to the observer, even without intention, that she has a lot of hair or that she has little hair. She must let it hang down and not roll it up.
Yes.