Is it permissible for a woman to go to the market, knowing that she is wearing the Shari'ah hijab and has no mahram (relative one may not marry) with her?

Question:
The questioner says: Is it permissible for me to let my sisters go out to the market, knowing that they are modest and wearing the Shari'ah hijab, and have no mahram with them?

Answer:
If it is for a need, if their going out to the market is for a need, while observing the Shari'ah etiquettes and modesty, and they go out only as much as the need requires and then return to their homes, then this is permissible. However, if their going out to the markets is for sightseeing, recreation, or other such matters, or if she is not modest, does not cover herself, does not avoid free mixing of men and women, or jokes with men, then this is not permissible. If she violates the Shari'ah etiquettes, this is not permissible for her; it is forbidden for her.