(39) باب مَا يُنْهَى مِنَ الْوَيْلِ وَدَعْوَى الْجَاهِلِيَّةِ عِنْدَ الْمُصِيبَةِ
Narrated `Abdullah:
The Prophet (ﷺ) said, "He who slaps the cheeks, tears the clothes and follows the traditions of the Days of Ignorance is not from us."
Reference: Sahih al-Bukhari 1298
In-book reference: Book 23, Hadith 57
USC-MSA web (English) reference(deprecated numbering scheme): Vol. 2, Book 23, Hadith 385