Chapter on Rules of Janabah and Methods of Purification
Tahdhīb al-Aḥkām|Volume 1|Book 1|Chapter 6
وَ فِي رِوَايَةِ زُرْعَةَ عَنْ سَمَاعَةَ:« سَبْعِينَ آيَةً».
In the narration of Zur'ah from Sama'ah: (Imam عليه السلام allowed) "Seventy verses."
- Tahdhīb al-Aḥkām fī Sharḥ al-Muqniʿah, vol. 1, p. 135
- Ṣaḥīḥ al-Tahdhīb