It is unlawful for a man to look at the body or hair of non-maḥram [Muslim] women, be it with lust or without lust, with fear of sinning or without such a fear. As for looking at the face and hands up to the wrists of non-maḥram women, if it is with lust or there is a fear of sinning, it too is unlawful. In fact, the recommended precaution is that a man should not look at these areas even if it is not with lust and there is no fear of sinning.
Furthermore, it is unlawful for a woman to look at the body of a non-maḥram man with lust or if there is a fear of sinning. In fact, based on obligatory precaution, a woman must not look at these areas even if it is not with lust and there is no fear of sinning. However, there is no problem for a woman to look at those areas of the body that men usually do not cover – such as the head, hands, and feet – if it is not with lust and there is no fear of sinning.