(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]. (AR)
Reference (AR): Bulugh al-Maram 104 (AR)
In-book reference (AR): Book 1, Hadith 123 (AR)
English translation (AR): Book 1, Hadith 110 (AR)