وَحَدَّثَنِي مَالِكٌ، أَنَّهُ بَلَغَهُ أَنَّ سَعِيدَ بْنَ الْمُسَيَّبِ، قَالَ فِي رَجُلٍ هَلَكَ وَتَرَكَ بَنِينَ لَهُ ثَلاَثَةً وَتَرَكَ مَوَالِيَ أَعْتَقَهُمْ هُوَ عَتَاقَةً ثُمَّ إِنَّ الرَّجُلَيْنِ مِنْ بَنِيهِ هَلَكَا وَتَرَكَا أَوْلاَدًا ‏.‏ فَقَالَ سَعِيدُ بْنُ الْمُسَيَّبِ يَرِثُ الْمَوَالِيَ الْبَاقِي مِنَ الثَّلاَثَةِ فَإِذَا هَلَكَ هُوَ فَوَلَدُهُ وَوَلَدُ إِخْوَتِهِ فِي وَلاَءِ الْمَوَالِي شَرَعٌ سَوَاءٌ ‏.‏

Malik related to me that he had heard that Said ibn al-Musayyabspoke about a man who died and left three sons and left mawali whom hehad freed. Then two of his sons died and left children. He said, "Thethird remaining son inherits the mawali. When he dies, his childrenand the children of his brothers share equally in the wala' of themawali." Translation Not Available

Book Ref: Muwatta Imam Malik Book 38 Hadith 1490
Web Ref:  Muwatta Imam Malik Book 38 Hadith 24