Chapter on the Etiquettes of Judgment
Man Lā Yaḥḍuruh al-Faqīh|Volume 3|Book 1|Chapter 10
وَ إِنَّ رَجُلاً نَزَلَ بِعَلِيِّ بْنِ أَبِي طَالِبٍ عَلَيْهِ اَلسَّلاَمُ فَمَكَثَ عِنْدَهُ أَيَّاماً ثُمَّ تَقَدَّمَ إِلَيْهِ فِي حُكُومَةٍ لَمْ يَذْكُرْهَا لِعَلِيٍّ عَلَيْهِ اَلسَّلاَمُ فَقَالَ لَهُ عَلِيٌّ عَلَيْهِ اَلسَّلاَمُ "أَ خَصْمٌ أَنْتَ" قَالَ نَعَمْ قَالَ "تَحَوَّلْ عَنَّا فَإِنَّ رَسُولَ اَللَّهِ صَلَّى اَللَّهُ عَلَيْهِ وَ آلِهِ نَهَى أَنْ يُضَافَ اَلْخَصْمُ إِلاَّ وَ مَعَهُ خَصْمُهُ".
A man stayed as a guest with Imam Ali ibn Abi Talib عليه السلام for a few days. Then he presented a legal dispute to him, which he had not previously mentioned to Imam Ali عليه السلام. So Imam Ali ibn Abi Talib عليه السلام said to him: "Are you a litigant?" He replied: "Yes." Imam Ali ibn Abi Talib عليه السلام said: "Then leave us, for the Messenger of Allah سبحانه وتعالى (peace be upon him and his family) forbade hosting a litigant except when his opponent is also present."
- Ṣaḥīḥ al-Faqīh