Caution: Translations of Quran and Ḥadīth may lead to possible misapplications and misinterpretations. This site is intended for students of sacred knowledge that are proficient in comprehending classical Arabic and have a strong foundation in Islamic sciences. Also note that religious injunctions rely on several aspects beyond what one may glean through reading individual aḥādīth.
quran:55:41

The criminals will be known by their marks, and they will be seized by the forelocks and the feet.  

The guilty will be recognised by their mark: blackened faces and bruised eyes; so they will be seized by the forelocks and the feet.
القرآن:٥٥:٤١

يُعْرَفُ الْمُجْرِمُونَ بِسِيمَاهُمْ فَيُؤْخَذُ بِالنَّوَاصِي وَالْأَقْدَامِ  

{يعرف المجرمون بسيماهم} سواد الوجوه وزرقة العيون {فيؤخذ بالنواصي الأقدام}.