 أَبِی ره قَالَ حَدَّثَنِی سَعْدُ بْنُ عَبْدِ اللَّهِ عَنْ أَحْمَدَ بْنِ مُحَمَّدٍ عَنْ عُثْمَانَ بْنِ عِیسَی عَنْ أَبِی بَصِیرٍ عَنْ أَبِی عَبْدِ اللَّهِ ع قَالَ: إِنَّ أَجَلَّ عَذَابِ الْقَبْرِ فِی الْقَبْرِ مِنَ الْبَوْلِ.
1. My father (rah) said: it was narrated to me by Sa’d b. Abdillah from Ahmad b. Muhammad from Uthman b. Isa from Abi Basir from Abi Abdillah  who said: “The punishment of grave is mostly due to careless attitude towards the impurity of urine.”