That limit is the area of the face which one’s forefinger...

That limit is the area of the face which one’s forefinger, middle finger and thumb cover in width and in depth from the hairline on the forehead down to one’s chin and the area of the face over which the two fingers (middle finger and thumb) pass downward is of the face, besides this is not of the face.’ I (the narrator) then said, ‘Is the temple not of the face?’ He (the Imam) said, ‘No, it is not (part) of the face.’”

صحيح - Allamah Baqir al-Majlisi (Mirʾāt al-ʿUqūl fī Sharḥ Akhbār Āl al-Rasūl (13/79))