Sunan al-Nasa'i
The Book of Funerals — Hadith #2063
أَخْبَرَنَا سُوَيْدُ بْنُ نَصْرٍ، قَالَ حَدَّثَنَا عَبْدُ اللَّهِ، عَنْ حُمَيْدٍ، عَنْ أَنَسٍ، أَنَّ النَّبِيَّ صلى الله عليه وسلم سَمِعَ صَوْتًا مِنْ قَبْرٍ فَقَالَ " مَتَى مَاتَ هَذَا " . قَالُوا مَاتَ فِي الْجَاهِلِيَّةِ . فَسُرَّ بِذَلِكَ وَقَالَ " لَوْلاَ أَنْ لاَ تَدَافَنُوا لَدَعَوْتُ اللَّهَ أَنْ يُسْمِعَكُمْ عَذَابَ الْقَبْرِ " .
“When died this man die?” They said: “he died during the Jahiliyyah.” So he was delighted and said: “Were it not that you would not bury one another, I would have prayed to Allah to make you hear the torment of the grave.”
Chain of Narration (Isnad)