Is it permissible for Muslim women to uncover their heads during prayer when there are non-mahram men present?

Question:
Is it permissible for Muslim women to uncover their heads while they are praying, when there are non-mahram men present?

Answer:
If she is praying, there is no harm in her uncovering her face while she prays, provided there is no one present among the women. However, if there is a non-mahram present, even if it is her husband's brother, she must cover herself; she covers her face and her body, even if she is praying. If there is a non-mahram present, such as her husband's brother, her sister's husband, a driver passing by, or a servant, she must cover herself absolutely, including her face; she covers it. As for if she is in her home and there is no one there, or there are only women, praise be to Allah, the sunnah (recommended practice) is for her to uncover her face; she uncovers her face and prays with her face uncovered if there are no non-mahram men present. As for the hands, it is better to cover them, but if she uncovers her hands, there is no harm, if Allah wills. As for the feet, they are covered in prayer, even if there is no one present except women; she covers her feet. Yes.