Hadith.3456 - Ishaq ibn Ammar asked Abu Ibrahim (Imam Musa ibn Jafar Al-Kadhim) (as), about a man who frees his slave as a delayed emancipation (to take effect after his death) and then becomes in need of the slave's price.
Imam (as) said: "He may sell him."
I asked: "What if he is not in need of the price?"
Imam (as) said: "If the slave agrees, then there is no harm."