“I once asked abu ‘Abd Allah (a.s.), about the case of a man who has a servant who serves him and he says, ‘She will serve so and so as long as he lives, and when he dies she will be free. The servant runs away five or six years before he dies; then his heirs find her; if they can make her to serve them for the remaining time. He (the Imam) said, ‘When the man dies she becomes free.’”