Al-Kāfi - Volume 5 > Using the Properties of Orphans in Business and Lending
Hadith #3

3- مُحَمَّدُ بْنُ إِسْمَاعِيلَ عَنِ الْفَضْلِ بْنِ شَاذَانَ عَنِ ابْنِ أَبِي عُمَيْرٍ عَنْ رِبْعِيِّ بْنِ عَبْدِ اللهِ عَنْ أَبِي عَبْدِ اللهِ (عَلَيْهِ السَّلام) قَالَ فِي رَجُلٍ عِنْدَهُ مَالُ الْيَتِيمِ فَقَالَ إِنْ كَانَ مُحْتَاجاً وَلَيْسَ لَهُ مَالٌ فَلا يَمَسَّ مَالَهُ وَإِنْ [هُوَ] اتَّجَرَ بِهِ فَالرِّبْحُ لِلْيَتِيمِ وَهُوَ ضَامِنٌ.

3. Muhammad ibn ‘Isma’il has narrated from al-Fadl ibn Shadhan from ibn abu ‘Umayr from Rib’iy ibn ‘Abd Allah who has said the following: “About the case of a man who has the assets of an orphan with him, abu ‘Abd Allah, ‘Alayhi al-Salam, has said, ‘If he is poor and has no assets of his own, he must not touch the assets of the orphan; and if he uses it in business, he is responsible for it and the profit belongs to the orphan.’”