Chapter on Usury (Riba)
Man Lā Yaḥḍuruh al-Faqīh|Volume 3|Book 2|Chapter 27
وَ رَوَى اَلْحَلَبِيُّ عَنْ أَبِي عَبْدِ اَللَّهِ عَلَيْهِ اَلسَّلاَمُ أَنَّهُ قَالَ: "لاَ بَأْسَ بِمُعَاوَضَةِ اَلْمَتَاعِ مَا لَمْ يَكُنْ كَيْلاً وَ لاَ وَزْناً".
Al-Halabi narrated from Abu Abdullah عليه السلام that Imam عليه السلام said: "There is no harm in exchanging goods, as long as they are not measured or weighed."
- Ṣaḥīḥ al-Faqīh