Abu Hurayra reported that the Prophet, may Allah bless him and grant him peace, said, "When one of you strikes his servant, let him avoid his face."  

عَنِ النَّبِيِّ ﷺ قَالَ إِذَا ضَرَبَ أَحَدُكُمْ خَادِمَهُ فَلْيَجْتَنِبِ الْوَجْهَ  

Jabir said, "The Prophet, may Allah bless him and grant him peace, passed by an animal which had been branded and its nostrils were smoking. The Prophet, may Allah bless him and grant him peace, said, 'Allah curses any person who does this. No one should mark the face nor strike it.'"  

عَنْ جَابِرٍ قَالَ مَرَّ النَّبِيُّ ﷺ بِدَابَّةٍ قَدْ وُسِمَ يُدَخِّنُ مَنْخِرَاهُ قَالَ النَّبِيُّ ﷺ لَعَنَ اللَّهُ مَنْ فَعَلَ هَذَا لاَ يَسِمَنَّ أَحَدٌ الْوَجْهَ وَلاَ يَضْرِبَنَّهُ