Al-Kāfi
Hadith 6985- الْحُسَيْنُ بْنُ مُحَمَّدٍ عَنْ مُحَمَّدِ بْنِ أَحْمَدَ النَّهْدِيِّ عَنْ مُحَمَّدِ بْنِ خَالِدٍ عَنْ إِسْمَاعِيلَ بْنِ عَبْدِ الْخَالِقِ قَالَ قُلْتُ لأبِي عَبْدِ اللهِ (عَلَيْهِ السَّلام) إِنَّا نَبْعَثُ بِالدَّرَاهِمِ لَهَا صَرْفٌ إِلَى الأهْوَازِ فَيَشْتَرِي لَنَا بِهَا الْمَتَاعَ ثُمَّ نَلْبَثُ فَإِذَا بَاعَهُ وُضِعَ عَلَيْهِ صَرْفُهُ فَإِذَا بِعْنَاهُ كَانَ عَلَيْنَا أَنْ نَذْكُرَ لَهُ صَرْفَ الدَّرَاهِمِ فِي الْمُرَابَحَةِ يُجْزِئُنَا عَنْ ذَلِكَ فَقَالَ لا بَلْ إِذَا كَانَتِ الْمُرَابَحَةُ فَأَخْبِرْهُ بِذَلِكَ وَإِنْ كَانَ مُسَاوَمَةً فَلا بَأْسَ.
5. Al-Husayn from Muhammad has narrated from Muhammad ibn Ahmad al-Nahdiy from Muhammad ibn Khalid from ‘Isma’il ibn ‘Abd al-Khaliq who has said the following: “I once said to abu ‘Abd Allah (a.s.), ‘We send dirham to Ahwaz where the price of dirham is different. With it goods are bought for us. We then wait until the goods are sold, the difference of price of dirham is deducted from it, if we sell. Is it necessary for us to mention the difference in prices in selling in the form of Murabahah (capital plus profit) on our part (of such difference)?’ He (the Imam) said, ‘No, you must mention it if it is in the form of Murabahah (capital plus profit), but if it is in the form of Musawamah (fixed price regardless of capital) then it is lawful.’”