The Legal Basis for Covering the Face:
Furthermore, many of today’s scholars assert that a woman’s face is ʿawrah and that unveiling it is unlawful; what has already been presented in this study is sufficient, God willing, to answer them. On the other side is a faction who consider covering the face an innovation and an unwarranted excess in religion—something we have heard attributed to certain adherents of the Sunnah in parts of Lebanon. To those brothers and to anyone else concerned, we address the following remarks:
Let it be known that concealing the face and the hands has a foundation in the Sunnah. It was practiced in the Prophet’s own time, as he ﷺ indicated when he said:
“lā tantaqibu al-marʾatu al-muḥrimah, wa-lā talbas al-quffāzayn” (A woman in the state of iḥrām must not veil her face with a niqāb, nor wear gloves) 1.
Shaykh al-Islām Ibn Taymiyyah said in Tafsīr Sūrat al-Nūr, p. 56:
“This proves that the niqāb and gloves were familiar garments for women not in iḥrām, which necessarily implies that they customarily covered their faces and hands.”