Al-Mudabbar (the Slave for whose Freedom Death of the Master is a Condition) is from One Third of the Legacy

4. Ali ibn Ibrahim has narrated from his father and Muhammad ibn ’Isma‘il has narrated from al-Fadl ibn Shadhan from all from Ibn Abi ‘Umayr from Mu‘awiyah ibn ‘Ammar who has narrated the following: “I once asked abu ‘Abd Allah عليه السلام, about al-Mudabbar. He (the Imam) said, ‘It is like will which one can change in whatever way one likes.’”