Hadith 5445
وَعَنْهُ قَالَ: قَالَ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ: وَالَّذِي نَفْسِي بِيَدِهِ لَا تَذْهَبُ الدُّنْيَا حَتَّى يَمُرَّ الرَّجُلُ عَلَى الْقَبْرِ فَيَتَمَرَّغُ عَلَيْهِ ويقولُ: يَا لَيْتَني مَكَانَ صَاحِبِ هَذَا الْقَبْرِ وَلَيْسَ بِهِ الدِّينُ إِلَّا الْبلَاء . رَوَاهُ مُسلم
He reported God's messenger as saying, "By Him in whose hand my soul is, the world will not pass away before a man comes by a grave and rolls on it saying he wishes he were, in the place of the occupant of that grave, not for religious reasons, but because of tribulation." Muslim transmitted it.