Hadith.3825 - Al-Is ibn al-Qasim asked Abu Abdullah (as) about a slave who claimed that he was free but did not provide any evidence for his claim.
The Imam (as) replied: "Yes, you may buy him."
Man Lā Yaḥḍuruh al-Faqīh #33"I wrote to Abu al-Hasan (as), stating that I was obligated to free a slave, but my slave had escaped, and I did not know where he was....