How the Muslim man and woman cover their bodies

Question:
Does Islam command the concealment of the skin, or does it command the concealment of the limb itself? If it commands the concealment of the limb itself, what about the men who wear European-style clothing that covers only the skin of the body and leaves the limb as it is? Is that acceptable in Islam?

Answer:
Covering is required, and men and women differ in this. The woman is entirely 'awrah (the part of the body that must be covered), and her matter is serious. You have heard, O questioner, the saying of the Prophet (peace and blessings be upon him): Therefore, it is obligatory for women to cover themselves, to be careful, and not to reveal the size of their limbs through tight or thin clothing.
The obligation upon them is great, its meaning is clear, and the danger of neglecting it is clearly great. Covering the limbs is obligatory in the presence of non-mahram (a relative one may not marry). As for the mahram, you have heard in the seminar what you heard, and that the mahram is permitted to look at what usually appears of her, such as the face, hands, and feet, and the like, such as the earring, necklace, and the like.
As for the man, his matter is broader. If he covers what is between the navel and the knee with something thick and sturdy that covers what is between the navel and the knee, that is sufficient. For the 'awrah of the man is what is between the navel and the knee. If he covers that with sufficient covering that covers the 'awrah and does not reveal it—neither the 'awrah of the rear passage, nor the penis, nor the testicles—he will have covered it with sufficient covering, and there is no harm in that.
And if, as Shaykh Abdullah ibn Jibrin indicated, in places where they consider the exposure of the chest or the back to be ugly, then covering that in their view is more complete. For custom differs, countries differ, and gatherings differ. So it is not befitting for a person to be lax in such matters. Rather, he should do what is not considered objectionable or ugly in the custom of people, so that he is not accused of laxity in his religion, or accused of something else that harms him.
Likewise, if a person has a beautiful body and is a handsome young man, then complete covering is required. For some people may be attracted to young men more than to women. So caution is required in such a case. It is not said regarding the young man that he exposes his chest, exposes his shoulders, and exposes his legs; for he may harm people with this, and he may cause fitnah (trial, discord or temptation) among people with this, and he may be tested himself. He should cover himself in such a case, wear covering shirts, and beware of the trial of beauty and the trial of fitnah among some young men. This is a serious matter.
The minimum for the young man, the minimum, is to cover what is between the knee and the navel with sufficient, thick, substantial covering, so that he may be saved. And if he extends the covering until he covers most of the leg, that is better. And if he covers his chest and back with a good, covering undershirt, that is more complete, and more complete. And so, what happens in ball games, he should cover himself to the utmost degree of covering, and the thigh should be covered with complete covering, for it is 'awrah. And if he covers the leg with that, and covers what is above the navel with the undershirt, that is more complete, and safer for him, and safer for others as well. May Allah grant everyone well-being.