وَبَدَنُ الْمَرْأَةِ الْحُرَّةِ كُلُّهُ عَوْرَةٌ، إِلَّا وَجْهَهَا وَكَفَّيْهَا
Translation: The body of a free woman is all awrah, except her face and two hands (palms).
The face and hands are expressly excluded in this passage. Their treatment reflects juristic readings of necessity and relevant legal evidence.
Hanafi jurists have also differed on whether the feet must be covered during prayer; an established view excepts the feet. The original clause expressly lists the face and hands, while the additional debate over feet should be kept distinct.