Chapter on Sales
Man Lā Yaḥḍuruh al-Faqīh|Volume 3|Book 2|Chapter 11
وَ رَوَى مُحَمَّدُ بْنُ قَيْسٍ عَنْ أَبِي جَعْفَرٍ عَلَيْهِ اَلسَّلاَمُ قَالَ إِنَّ أَمِيرَ اَلْمُؤْمِنِينَ عَلَيْهِ اَلسَّلاَمُ قَالَ: "مَنْ ضَمَّنَ تَاجِراً فَلَيْسَ لَهُ إِلاَّ رَأْسُ اَلْمَالِ وَ لَيْسَ لَهُ مِنَ اَلرِّبْحِ شَيْءٌ".
Muhammad bin Qays narrated from Abu Ja'far Imam Muhammad ibn Ali Al-Baqir عليه السلام who said that Commander of the Faithful عليه السلام said: "Whoever guarantees a trader is entitled only to the principal amount and has no share in the profit."
- Ṣaḥīḥ al-Faqīh