Etiquettes of Doing Business
Al-Kāfi|Volume 5|Book 2|Chapter 54
15- عَنْهُ عَنْ عُثْمَانَ بْنِ عِيسَى عَنْ مُيَسِّرٍ عَنْ أَبِي عَبْدِ اللهِ (عَلَيْهِ السَّلام) قَالَ غَبْنُ الْمُؤْمِنِ حَرَامٌ.
15. It is narrated from the narrator of previous Hadith from ‘Uthman ibn ‘Isa from Muyassir who has said the following: “Abu ‘Abd Allah عليه السلام, has said, ‘Selling above fair piece to a believing person is unlawful.’”
- Mirʾāt al-ʿUqūl fī Sharḥ Akhbār Āl al-Rasūl (19/138)
- Ṣaḥīḥ al-Kāfī, vol. 2, p. 315