Ibrahim (may Allah have mercy on him) was asked about a man who freed a slave and then died, leaving behind his father and his son. Then the freed slave died. He said: "The father will get one-sixth, and the rest will go to the son."
Hadith Referenceسنن سعید بن منصور / كتاب ولاية العصبة / 1438
Hadith Takhrij«أخرجه الدارمي فى «مسنده» برقم: 3053، وسعيد بن منصور فى «سننه» ترقيم الدرالسلفية برقم:، 261، وابن أبى شيبة فى «مصنفه» برقم: 32174»