The Prophet ﷺ said, "The Hour will not be established till a man passes by a grave of somebody and says, 'Would that I were in his place.' "  

عَنِ النَّبِيِّ ﷺ قَالَ لاَ تَقُومُ السَّاعَةُ حَتَّى يَمُرَّ الرَّجُلُ بِقَبْرِ الرَّجُلِ فَيَقُولُ يَا لَيْتَنِي مَكَانَهُ