Imam Malik (may Allah have mercy on him) said that it reached him that Sa'id bin al-Musayyib (may Allah have mercy on him) said, concerning a man who died and left three sons and slaves whom he had freed, and then two men among his children (i.e. sons) died and left a child: Sa'id bin al-Musayyib (may Allah have mercy on him) said that the remaining (son) will inherit those freed slaves; then when he dies, his children and his brothers' children will share equally in those freed slaves.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الولاء / 21500