Chapter on Etiquettes of Causes Requiring Purification
Tahdhīb al-Aḥkām|Volume 1|Book 1|Chapter 3
فَأَمَّا اَلْحَدِيثُ اَلَّذِي رَوَاهُ مُحَمَّدُ بْنُ عَلِيِّ بْنِ مَحْبُوبٍ عَنِ اَلْهَيْثَمِ بْنِ أَبِي مَسْرُوقٍ عَنْ مُحَمَّدِ بْنِ إِسْمَاعِيلَ قَالَ: دَخَلْتُ عَلَى أَبِي اَلْحَسَنِ اَلرِّضَا عَلَيْهِ اَلسَّلاَمُ وَ فِي مَنْزِلِهِ كَنِيفٌ مُسْتَقْبِلَ اَلْقِبْلَةِ.
As for the narration reported by Muhammad bin Ali bin Mahbub from Al-Haytham bin Abi Masruq, from Muhammad bin Ismail, who said:
(Narrator said) "I entered upon Abu Al-Hasan Al-Ridha عليه السلام, and in his house, there was a toilet facing the Qiblah."
- Tahdhīb al-Aḥkām fī Sharḥ al-Muqniʿah, vol. 1, p. 27
- Ṣaḥīḥ al-Tahdhīb