Chapter on Testimony Based on Testimony
Man Lā Yaḥḍuruh al-Faqīh|Volume 3|Book 1|Chapter 30
وَ رَوَى غِيَاثُ بْنُ إِبْرَاهِيمَ عَنْ جَعْفَرِ بْنِ مُحَمَّدٍ عَنْ أَبِيهِ عَلَيْهِ اَلسَّلاَمُ: "أَنَّ عَلِيّاً عَلَيْهِ اَلسَّلاَمُ كَانَ لاَ يُجِيزُ شَهَادَةَ رَجُلٍ عَلَى شَهَادَةِ رَجُلٍ إِلاَّ شَهَادَةَ رَجُلَيْنِ عَلَى شَهَادَةِ رَجُلٍ".
Ghiyath ibn Ibrahim narrated from Imam Jafar ibn Muhammad Al-Sadiq عليه السلام from his father Imam Muhammad ibn Ali Al-Baqir عليه السلام: "Indeed, Imam Ali عليه السلام would not validate the testimony of one man based on the testimony of another man, except if there were two men testifying based on testimony of one man."
- Ṣaḥīḥ al-Faqīh