(7) باب قضاء الحاجة
and Al-Hakim reported that:
"Urination is the main cause of punishment in the grave". [Its chain of narrators is authentic]. (JA)
Reference (JA): Bulugh al-Maram 104 (JA)
In-book reference (JA): Book 1, Hadith 123 (JA)
English translation (JA): Book 1, Hadith 110 (JA)