Ziyad bin Nu'aym relates that he was sitting with Ibn Umar (may Allah be pleased with them both) when a man came with a bag of silver and said: Your father's freed slave has died. He told me to give this to you. He said: Woe to him! Why did he not spend it in the cause of Allah? Meanwhile a messenger of Asim bin Umar (may Allah be pleased with them both) came, saying: Give me the inheritance of my father's freed slave. He gave him the entire inheritance; Ibn Umar (may Allah be pleased with them both) himself did not take the inheritance of a sa'ibah, and Umar (may Allah be pleased with him) had freed him as a sa'ibah.
Al-Shaykh said: If this is authentic, it was not forbidden; had he considered it forbidden, he would certainly have stopped his brother Asim, just as he himself refrained. But keeping away from it is recommended.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الولاء / 21486