1400. hadíth
قَالَ اَلصَّادِقُ عَلَيْهِ اَلسَّلاَمُ: "غَبْنُ اَلْمُسْتَرْسِلِ سُحْتٌ وَ غَبْنُ اَلْمُؤْمِنِ حَرَامٌ".
Imam Jafar ibn Muhammad Al-Sadiq (a.s) said: "Defrauding the one who entrusts you is unlawful gain, and defrauding a believer is forbidden."