Chapter on the Description of Ablution (Wudu)
Tahdhīb al-Aḥkām|Volume 1|Book 1|Chapter 4
بِقَوْلِهِ عَلَيْهِ اَلسَّلاَمُ:« إِنَّمَا اَلرِّبَا فِي اَلنَّسِيئَةِ».
By his statement عليه السلام: "Indeed, usury (Riba) is only in deferred payment."
- Tahdhīb al-Aḥkām fī Sharḥ al-Muqniʿah, vol. 1, p. 87
- Ṣaḥīḥ al-Tahdhīb