ENOfficial
and Al-Hakim reported that: “Urination is the main cause of punishment in the grave”. .
Source: sunnah.com
Other translations
Arabic
وَلِلْحَاكِمِ: { أَكْثَرُ عَذَابِ اَلْقَبْرِ مِنْ اَلْبَوْلِ } وَهُوَ صَحِيحُ اَلْإِسْنَاد ِ 1 .
sunnah.com