The deceased is tormented because of his family's crying for him
وَحَدَّثَنِي عَلِيُّ بْنُ حُجْرٍ السَّعْدِيُّ، حَدَّثَنَا عَلِيُّ بْنُ مُسْهِرٍ، عَنِ الأَعْمَشِ، عَنْ أَبِي، صَالِحٍ عَنِ ابْنِ عُمَرَ، قَالَ لَمَّا طُعِنَ عُمَرُ أُغْمِيَ عَلَيْهِ فَصِيحَ عَلَيْهِ فَلَمَّا أَفَاقَ قَالَ أَمَا عَلِمْتُمْ أَنَّ رَسُولَ اللَّهِ صلى الله عليه وسلم قَالَ " إِنَّ الْمَيِّتَ لَيُعَذَّبُ بِبُكَاءِ الْحَىِّ " .
Ibn 'Umar reported: When 'Umar was wounded he fainted, and there was a loud lamentation over him. When he regained consciousness he said: Didn't you know that the Messenger of Allah (ﷺ) said:" The dead is punished because of the weeping of the living"?