The deceased is tormented because of his family's crying for him
حَدَّثَنَا أَبُو بَكْرِ بْنُ أَبِي شَيْبَةَ، حَدَّثَنَا وَكِيعٌ، عَنْ سَعِيدِ بْنِ عُبَيْدٍ الطَّائِيِّ، وَمُحَمَّدِ، بْنِ قَيْسٍ عَنْ عَلِيِّ بْنِ رَبِيعَةَ، قَالَ أَوَّلُ مَنْ نِيحَ عَلَيْهِ بِالْكُوفَةِ قَرَظَةُ بْنُ كَعْبٍ فَقَالَ الْمُغِيرَةُ بْنُ شُعْبَةَ سَمِعْتُ رَسُولَ اللَّهِ صلى الله عليه وسلم يَقُولُ " مَنْ نِيحَ عَلَيْهِ فَإِنَّهُ يُعَذَّبُ بِمَا نِيحَ عَلَيْهِ يَوْمَ الْقِيَامَةِ " .
'Ali b. Rabi'a reported that the first one who was lamented upon in Kufa was Qaraza b. Ka'b. Mughira b. Shu'ba said: I heard the Messenger of Allah (ﷺ) saying: He who is lamented upon would be punished because of the lamentation for him on the Day of judgment.