Man Lā Yaḥḍuruh al-Faqīh
Hadith 2815251 - وَ رَوَى اَلْحَسَنُ بْنُ مَحْبُوبٍ عَنْ عَلِيِّ بْنِ رِئَابٍ عَنْ ضُرَيْسٍ اَلْكُنَاسِيِّ عَنْ أَبِي جَعْفَرٍ عَلَيْهِ اَلسَّلاَمُ : فِي نَصْرَانِيٍّ قَتَلَ مُسْلِماً فَلَمَّا أُخِذَ أَسْلَمَ أَقْتُلُهُ بِهِ قَالَ "نَعَمْ" قِيلَ فَإِنْ لَمْ يُسْلِمْ قَالَ "يُدْفَعُ إِلَى أَوْلِيَاءِ اَلْمَقْتُولِ فَإِنْ شَاءُوا قَتَلُوا وَ إِنْ شَاءُوا عَفَوْا وَ إِنْ شَاءُوا اِسْتَرَقُّوا وَ إِنْ كَانَ مَعَهُ مَالٌ عَيْنٌ لَهُ دُفِعَ إِلَى أَوْلِيَاءِ اَلْمَقْتُولِ هُوَ وَ مَالُهُ".
Hadith.5251 - Al-Hasan ibn Mahbub narrated from Ali ibn Riʾab from Ḍurays Al-Kunasi who reported from Abu Jafar Imam Muhammad ibn Ali Al-Baqir (as) regarding a Christian man who killed a Muslim. When he was captured, he accepted Islam.
Imam (as) was asked: "Should he be killed for the Muslim he murdered?"
Imam (as) replied: "Yes."
It was then asked: "And if he does not accept Islam?"
Imam (as) said: "He will be handed over to the heirs of the murdered person. If they wish, they may kill him, if they wish, they may pardon him, and if they wish, they may enslave him. And if he possesses any tangible wealth, it will be handed over to the heirs of the murdered person along with him."