عن عمر بن الخطاب رضي الله عنه قال‏:‏ قال النبي صلى الله عليه وسلم ‏:‏‏"‏الميت يُعذب في قبره بما نِيح عليه ‏"‏‏. وَفِي روايةٍ:"مَا نِيحَ علَيْهِ"‏ ‏(‏‏(‏متفق عليه‏)‏‏)‏‏.‏
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Ibn Mas'ud (May Allah be pleased with him) said

The Messenger of Allah (ﷺ) said, "He who (on befalling a calamity) slaps his cheeks, tears his clothes and follows the ways and traditions of the Days of Ignorance is none of us."[Al-Bukhari and Muslim].