Hadith 104
Bulugh al-Maram
The Book of Purification · The Manners of Answering the Call of Nature
Arabic
وَلِلْحَاكِمِ: { أَكْثَرُ عَذَابِ اَلْقَبْرِ مِنْ اَلْبَوْلِ } وَهُوَ صَحِيحُ اَلْإِسْنَاد ِ 1 .
English translation
and Al-Hakim reported that: “Urination is the main cause of punishment in the grave”. [Its chain of narrators is authentic].