Hadith.3465 - Aban narrated from Abd al-Rahman, who said: I asked him about a man who said to his slave, "If something happens to me, you are free." Meanwhile, the man is obligated to free a slave as an expiation for breaking an oath or zihar (a form of prohibited declaration regarding one's wife). I asked: "Can he use this same slave, whom he had promised freedom upon his death, to fulfill the requirement of freeing a slave for the expiation?" Imam said: "No, it is not permissible to use the slave designated for that purpose."