Muwatta Imam Malik (Riwayat Yahya)

Imam Malik, may Allah have mercy on him, said that if a mukatab (a slave with a contract for freedom) also makes his own slave a mukatab, and then the mukatab of the mukatab is freed before the original mukatab, then his wala’ (right of allegiance) will go to the mawla (master) of the original mukatab until the original mukatab is freed. When the original mukatab is freed, the wala’ of his mukatab will return to him. If the mukatab dies or becomes incapable before paying off the contract, then his free children will not receive the wala’ of their father’s mukatab, because their father did not have the right to wala’, as he was not freed.