Musannaf Ibn Abi Shaybah 33570 — A man who frees a man as a saibah

Ata bin Abi Rabah says that Tariq bin al-Muraqqi' set a slave of his free for the sake of Allah. Then the slave died and left his property. It was presented to his master Tariq, who said: "This is something I have given up for Allah, so I will not take it back." So Sayyiduna Umar (may Allah be pleased with him) was written to about this. He said: "Give the property to Tariq. If he takes it, well and good; otherwise, buy slaves with it and set them free." The narrator says: That property reached the price of fifteen slaves.