Sahih al-Bukhari 216
Narrated Ibn `Abbas:
Once the Prophet, while passing through one of the graveyards of Medina or Mecca heard the voices 
of two persons who were being tortured in their graves. The Prophet (ﷺ) said, "These two persons are 
being tortured not for a major sin (to avoid)." The Prophet (ﷺ) then added, "Yes! (they are being tortured 
for a major sin). Indeed, one of them never saved himself from being soiled with his urine while the 
other used to go about with calumnies (to make enmity between friends). The Prophet (ﷺ) then asked for a 
green leaf of a date-palm tree, broke it into two pieces and put one on each grave. On being asked why 
he had done so, he replied, "I hope that their torture might be lessened, till these get dried."
حَدَّثَنَا عُثْمَانُ، قَالَ حَدَّثَنَا جَرِيرٌ، عَنْ مَنْصُورٍ، عَنْ مُجَاهِدٍ، عَنِ ابْنِ عَبَّاسٍ، قَالَ مَرَّ النَّبِيُّ صلى الله عليه وسلم بِحَائِطٍ مِنْ حِيطَانِ الْمَدِينَةِ أَوْ مَكَّةَ، فَسَمِعَ صَوْتَ إِنْسَانَيْنِ يُعَذَّبَانِ فِي قُبُورِهِمَا، فَقَالَ النَّبِيُّ صلى الله عليه وسلم ‏"‏ يُعَذَّبَانِ، وَمَا يُعَذَّبَانِ فِي كَبِيرٍ ‏"‏، ثُمَّ قَالَ ‏"‏ بَلَى، كَانَ أَحَدُهُمَا لاَ يَسْتَتِرُ مِنْ بَوْلِهِ، وَكَانَ الآخَرُ يَمْشِي بِالنَّمِيمَةِ ‏"‏‏.‏ ثُمَّ دَعَا بِجَرِيدَةٍ فَكَسَرَهَا كِسْرَتَيْنِ، فَوَضَعَ عَلَى كُلِّ قَبْرٍ مِنْهُمَا كِسْرَةً‏.‏ فَقِيلَ لَهُ يَا رَسُولَ اللَّهِ لِمَ فَعَلْتَ هَذَا قَالَ ‏"‏ لَعَلَّهُ أَنْ يُخَفَّفَ عَنْهُمَا مَا لَمْ تَيْبَسَا أَوْ إِلَى أَنْ يَيْبَسَا ‏"‏‏.‏