The Prophet ﷺ said, "He who slaps the cheeks, tears the clothes and follows the tradition of the Days of Ignorance is not from us."  

عَنِ النَّبِيِّ ﷺ قَالَ لَيْسَ مِنَّا مَنْ ضَرَبَ الْخُدُودَ وَشَقَّ الْجُيُوبَ وَدَعَا بِدَعْوَى الْجَاهِلِيَّةِ