The Prophet ﷺ said, "He is not one of us who tears his garments, strikes his cheeks, and cries out with the call of the days of ignorance."
حدثنا محمد بن بشار حدثنا يحيى بن سعيد عن سفيان قال حدثني زبيد الأيامي عن إبراهيم عن مسروق
عن النبي ﷺ قال ليس منا من شق الجيوب وضرب الخدود ودعا بدعوة الجاهلية
Agreed upon (by Bukhari and Muslim). Bukhari narrated it in the Book of Funerals, Chapter: "He is not one of us who tears his garments," hadith no. 1294, from the hadith of Sufyan Thawri, and Muslim, hadith no. 103, from the hadith of Masruq, with the same wording.