Is the prayer valid if women do not cover their arms and legs?

Question:
Many women are lax in their prayer, so their arms or part of them appear, and likewise their feet, perhaps part of their leg. Is her prayer valid in that case?

Answer:
It is obligatory for a free, accountable woman to cover her entire body in prayer, except for the face and the two hands, because her entire body is 'awrah (the part of the body that must be covered).
If she prays while part of her 'awrah (the part of the body that must be covered) is exposed, such as the leg, the foot, or the head, or part of it, her prayer is not valid. This is based on the saying of the Prophet (peace and blessings be upon him): narrated by Ahmad and the compilers of the Sunan, except al-Nasa'i, with a sound chain. The term "menstruating woman" refers to a woman of legal age. Also, based on his saying (peace and blessings be upon him): And based on what Abu Dawud (may Allah have mercy on him) narrated from Umm Salama (may Allah be pleased with her) from the Prophet (peace and blessings be upon him) that she asked the Prophet (peace and blessings be upon him) about a woman praying in a long robe and a head covering without a lower garment, and he said: Al-Hafiz Ibn Hajar (may Allah have mercy on him) said in al-Bulugh: "The imams authenticated its stopping at Umm Salama (may Allah be pleased with her)." If there is a non-mahram (a relative one may not marry) present, it is obligatory for her to cover her face and hands as well.