Ibn Abbas reported: The Messenger of Allah, peace and blessings be upon him, passed by two graves and he said, “Both of them are being punished, but not for a sin difficult to avoid. As for this man, he did not stop his urine from soiling himself. And as for this man, he would spread gossip.” The Prophet then asked for a green leaf from a date-palm. The Prophet split it into two pieces and planted one on each grave, and he said, “Perhaps it will be lightened for them as long as these two leaves are not dried.”
Source: Ṣaḥīḥ al-Bukhārī 6052, Ṣaḥīḥ Muslim 292
Grade: Muttafaqun Alayhi (authenticity agreed upon) according to Al-Bukhari and Muslim
عَنْ ابْنِ عَبَّاسٍ رَضِيَ اللَّهُ عَنْهُمَا قَالَ مَرَّ رَسُولُ اللَّهِ صَلَّى اللَّهُ عَلَيْهِ وَسَلَّمَ عَلَى قَبْرَيْنِ فَقَالَ إِنَّهُمَا لَيُعَذَّبَانِ وَمَا يُعَذَّبَانِ فِي كَبِيرٍ أَمَّا هَذَا فَكَانَ لَا يَسْتَتِرُ مِنْ بَوْلِهِ وَأَمَّا هَذَا فَكَانَ يَمْشِي بِالنَّمِيمَةِ ثُمَّ دَعَا بِعَسِيبٍ رَطْبٍ فَشَقَّهُ بِاثْنَيْنِ فَغَرَسَ عَلَى هَذَا وَاحِدًا وَعَلَى هَذَا وَاحِدًا ثُمَّ قَالَ لَعَلَّهُ يُخَفَّفُ عَنْهُمَا مَا لَمْ يَيْبَسَا
6052 صحيح البخاري كتاب الأدب باب الغيبة
292 صحيح مسلم كتاب الطهارة باب الدليل على نجاسة البول ووجوب الاستبراء منه