Hadith.3521 - It is narrated by Talhah bin Zayd, from Imam Jafar ibn Muhammad Al-Sadiq عليه السلام from his father, Imam Muhammad ibn Ali Al-Baqir عليه السلام, peace be upon him, regarding a man who freed part of his slave.
Imam عليه السلام said: "He is completely free; there is no partner with Allah سبحانه وتعالى, the Almighty."