Chapter on Sales
Man Lā Yaḥḍuruh al-Faqīh|Volume 3|Book 2|Chapter 11
وَ سَأَلَهُ اَلْعِيصُ بْنُ اَلْقَاسِمِ: عَنْ مَمْلُوكٍ اِدَّعَى أَنَّهُ حُرٌّ وَ لَمْ يَأْتِ بِبَيِّنَةٍ عَلَى ذَلِكَ أَشْتَرِيهِ قَالَ "نَعَمْ".
Al-Is ibn al-Qasim asked Abu Abdullah عليه السلام about a slave who claimed that he was free but did not provide any evidence for his claim. The Imam عليه السلام replied: "Yes, you may buy him."
- Ṣaḥīḥ al-Faqīh, p. 227