Chapter on the Etiquettes of Judgment
Man Lā Yaḥḍuruh al-Faqīh|Volume 3|Book 1|Chapter 10
وَ رَوَى اَلْحَسَنُ بْنُ مَحْبُوبٍ عَنْ عَبْدِ اَللَّهِ بْنِ سِنَانٍ عَنْ أَبِي عَبْدِ اَللَّهِ عَلَيْهِ اَلسَّلاَمُ قَالَ: "إِذَا تَقَدَّمْتَ مَعَ خَصْمٍ إِلَى وَالٍ أَوْ إِلَى قَاضٍ فَكُنْ عَنْ يَمِينِهِ".
Al-Hasan ibn Mahbub narrated from Abdullah ibn Sinan, from Abu Abdillah عليه السلام who said:"If you appear with an opponent before a governor or a judge, stand to his right."
- Ṣaḥīḥ al-Faqīh, p. 184