The Shaykh spoke about the ruling on a woman covering her face.

The Shaykh : It is not forbidden in itself, but rather for the sake of something else. The difference is that there is an 'awrah (part of the body that must be covered). As for a woman in relation to another woman, this is forbidden in itself, like a man in relation to a man. For example, by consensus, the two private parts are 'awrah for a man in relation to a man. They differed regarding the thighs, which are part of the 'awrah, but the two private parts are indeed 'awrah by consensus, meaning there is blame in looking at them. The fact that a woman's face is 'awrah in relation to a man is a matter of blocking the means to harm (sadd al-dhara'i'). This is evidenced by the fact that the Lawgiver permitted uncovering the face or seeing the face in some cases, even according to those who say that a woman's face is 'awrah. Even according to that extreme person who swore by Allah the Exalted that the Shari'ah cannot permit uncovering the face. Here, a brief pause is necessary as a parenthetical remark: when this man said this, did he mean it absolutely, or with a restriction? He did not restrict it; he stated it absolutely. Meanwhile, those who say that a woman's face is 'awrah say that it is permissible to look at a woman's face in relation to whom? To the suitor, as mentioned in the hadith. So now, the Wise Lawgiver, according to those who say that a woman's face is 'awrah in relation to a man, is acting in the category of blocking the means to harm.
It is a matter of blocking the means to harm. What is the ruling on a man's face in relation to a woman? Is it 'awrah or not? Of course, no one says that a man's face is 'awrah in relation to a woman. So what is the difference, in terms of opinion, as these opinion-based people do? What is the difference between forbidding a woman's face in relation to a man and permitting a man's face in relation to a woman, when the operative cause is the same, which is blocking the means to harm? We have refuted the extremists who insist that a woman's face is 'awrah. They philosophize their opinion by saying, "The most beautiful thing about a woman is her face, so how can it be considered not 'awrah and permissible to look at?" We told them in our previous tour in your country, "And the most beautiful thing about a woman's face are her eyes. Is it permissible for her to uncover them so she can see the road?" They were speechless, and some of them said to me—and it was like a play, but it was a real situation. He said to me enthusiastically, we were in a gathering, so he stood up, even though the gathering was small, and said, "You say that a woman's face is not 'awrah, but Allah says: " I said to him, "What does 'let them draw their veils over their faces' mean?" He said, "It means they cover." I said, "They cover their faces with what?" He said, "With the jilbab (outer garment)." I said, "Suppose you are wearing a jilbab now, and this is the ghutrah (headscarf), which is short as you see. Suppose it is a jilbab, and you are standing. Do we cover your face with the jilbab?" I was amazed at him and his haste due to his blind emotion. And he covered his face. I said to him, "Come forward to me." He said, "I cannot." So how can a woman, if she leaves her house wearing her jilbab in this meaning of interpreting 'let them draw' as 'they cover,' how can she do that? You have now illustrated the meaning you understand from the verse, and you were unable to walk a few steps toward me. He said—something funny—, "We open a hole." I said, "Where did you get this hole from? The verse says 'let them draw,' meaning, as you claim, 'they cover.'" He said, "So she can see the road." I said, "Okay, when you now say 'so she can see the road,' you are speaking by opinion. And you rule by opinion that it is impossible for a woman's face to be other than 'awrah, because the most beautiful thing about a woman is her face. So you have permitted the woman to uncover the most beautiful thing about her face, which is her eye. But perhaps you will expand a little and permit the woman to uncover her eyes. You are not of the group who said, meaning, she shows one eye, as mentioned in some exegeses from some of the Salaf, 'Ubayd al-Salmani, and this is correct from him, and from Ibn 'Abbas, and it is not correct from him, meaning she uncovers one eye. He said, "There is no harm in uncovering two eyes so she can see the road." I said, "And in that case, you have permitted the woman by your opinion, not by the text, because the text you rely on to obligate the woman to cover her face is an absolute text, meaning they cover. So where did you get the uncovering of the two eyes, which are the most beautiful thing about a woman's face? He was speechless. I returned and said, "Is the most beautiful thing about a woman her face in relation to her, or in relation to men?" He said, "No, in relation to men." I said, "So what is the most beautiful thing about a woman in relation to a man? Is it not also her face? So they should also obligate hijab on men, along with the izar (lower garment). And this is from the evil of ruling by opinion in the texts of the Shari'ah. And Allah is the One to be sought for help."