Chapter on Testimony Based on Testimony
Man Lā Yaḥḍuruh al-Faqīh|Volume 3|Book 1|Chapter 30
وَ رَوَى اَلْعَلاَءُ عَنْ مُحَمَّدِ بْنِ مُسْلِمٍ قَالَ: سَأَلْتُ أَبَا جَعْفَرٍ عَلَيْهِ اَلسَّلاَمُ عَنِ اَلذِّمِّيِّ وَ اَلْعَبْدِ يُشْهَدَانِ عَلَى شَهَادَةٍ ثُمَّ يُسْلِمُ اَلذِّمِّيُّ وَ يُعْتَقُ اَلْعَبْدُ أَ تَجُوزُ شَهَادَتُهُمَا عَلَى مَا كَانَا أُشْهِدَا عَلَيْهِ قَالَ "نَعَمْ إِذَا عُلِمَ مِنْهُمَا بَعْدَ ذَلِكَ خَيْرٌ جَازَتْ شَهَادَتُهُمَا ".
Al-Ala narrated from Muhammad ibn Muslim: He said: I asked Abu Ja'far Imam Muhammad ibn Ali Al-Baqir عليه السلام about a dhimmi (non-Muslim under Islamic protection) and a slave who bore witness to a testimony. Then the dhimmi embraced Islam and the slave was emancipated, would their testimony about what they were made witnesses to before be valid? Imam عليه السلام said: "Yes, if goodness is known from them afterward, their testimony is valid."
- Ṣaḥīḥ al-Faqīh, p. 190