Al-Kāfi - Volume 7 > The Case of One who Dies without a Will, Leaves behind Small Heirs and it is Sold upon Him
Hadith #2

2- عِدَّةٌ مِنْ أَصْحَابِنَا عَنْ سَهْلِ بْنِ زِيَادٍ عَنِ ابْنِ مَحْبُوبٍ عَنِ ابْنِ رِئَابٍ قَالَ سَأَلْتُ أَبَا الْحَسَنِ (عَلَيْهِ السَّلام) عَنْ رَجُلٍ بَيْنِي وَبَيْنَهُ قَرَابَةٌ مَاتَ وَتَرَكَ أَوْلاداً صِغَاراً وَتَرَكَ مَمَالِيكَ لَهُ غِلْمَانٌ وَجَوَارِي وَلَمْ يُوصِ فَمَا تَرَى فِيمَنْ يَشْتَرِي مِنْهُمُ الْجَارِيَةَ يَتَّخِذُهَا أُمَّ وَلَدٍ وَمَا تَرَى فِي بَيْعِهِمْ قَالَ فَقَالَ إِنْ كَانَ لَهُمْ وَلِيٌّ يَقُومُ بِأَمْرِهِمْ بَاعَ عَلَيْهِمْ وَنَظَرَ لَهُمْ كَانَ مَأْجُوراً فِيهِمْ قُلْتُ فَمَا تَرَى فِيمَنْ يَشْتَرِي مِنْهُمُ الْجَارِيَةَ فَيَتَّخِذُهَا أُمَّ وَلَدٍ قَالَ لا بَأْسَ بِذَلِكَ إِذَا أَنْفَذَ ذَلِكَ الْقَيِّمُ لَهُمُ النَّاظِرُ فِيمَا يُصْلِحُهُمْ وَلَيْسَ لَهُمْ أَنْ يَرْجِعُوا فِيمَا صَنَعَ الْقَيِّمُ لَهُمُ النَّاظِرُ فِيمَا يُصْلِحُهُمْ.

2. A number of our people have narrated from Sahl ibn Ziyad from ibn Mahbub from ibn Ri’ab who has narrated the following: “I once asked abu al-Hassan, ‘Alayhi al-Salam, about the case of a man with whom I have a relation of kinship, he dies leaving behind small children, slaves and slave-girls but has not made any will. ‘What do you say about buying a slave-girl for a mother of one’s child and what do you say about selling them?’ He (the Imam) said, ‘If they have a guardian who supervises for them the sale and looks after them, he will receive good rewards.’ I asked, ‘What do you say about one’s buying from them a slave- girl for a mother of one’s child?’ He (the Imam) said, ‘It is not harmful if it is executed by their guardian who looks after their interests and well-being; and they cannot change their mind about what the guardian has done for them who looks after their well-being.’”