Musannaf Ibn Abi Shaybah 24664 — A mukatab slave who dies leaving

Musa bin Ulayy bin Rabah said: I asked al-Zuhri about a mukatab who married a free woman and had children by her, then bought a slave woman and had children by her, and then died while some of his contracted payment remained owing. Who is to work to pay off what remains? He said: "His children who are from his slave woman."