Is it obligatory for a woman to cover her head and feet if she prays alone in her house?

Question:
We say: Honorable Shaykh, may Allah grant you success, is it a condition for a woman who is in her house, in a room alone, if she wants to pray, that she cover her head and feet, or is it sufficient that the place is free of non-mahram men, provided there is safety from anyone entering on her?

Answer:
Pay attention: a woman has two 'awrah (parts of the body that must be covered): one in prayer and one in the presence of non-mahram men. Her 'awrah in prayer is her entire body except her face, if there are no non-mahram men present; her entire body except her face, even if she is in darkness or in a room. Her entire body is 'awrah in prayer except her face only. As for her 'awrah in the presence of non-mahram men, it is her entire body, and nothing is excluded; neither the face nor anything else is excluded.