US-P18.037ab ।US-P18.037cd ॥
In plain words
The reflection of a face in a mirror belongs to neither the face nor the mirror alone. If it were the true attribute of either one, it would still be present when the other is taken away.
Close to the Sanskrit
The reflection of a face which is in a mirror is a property of neither. If it were the attribute of one of the two, it would remain when the other is removed.