Chapter on the Rulings on Forgetfulness (Ahkam al-Sahw)
Tahdhīb al-Aḥkām|Volume 2|Book 1|Chapter 16
عَنْهُ عَنِ اَلنَّضْرِ عَنْ مُحَمَّدِ بْنِ أَبِي حَمْزَةَ عَنْ عَبْدِ اَلرَّحْمَنِ بْنِ اَلْحَجَّاجِ وَ عَلِيٍّ عَنْ أَبِي إِبْرَاهِيمَ عَلَيْهِ اَلسَّلاَمُ: فِي اَلسَّهْوِ فِي اَلصَّلاَةِ فَقَالَ« تَبْنِي عَلَى اَلْيَقِينِ وَ تَأْخُذُ بِالْجَزْمِ وَ تَحْتَاطُ بِالصَّلاَةِ كُلِّهَا»
From him, from al-Nadr, from Muhammad ibn Abi Hamzah, from Abdur-Rahman ibn al-Hajjaj and Ali:
Abu Ibrahim عليه السلام, peace be upon him, (was asked) regarding forgetfulness in prayer. Imam عليه السلام said: "You build upon certainty, act upon what is firm, and apply precaution to the entire prayer."
- Tahdhīb al-Aḥkām fī Sharḥ al-Muqniʿah, vol. 2, p. 370
- Ṣaḥīḥ al-Tahdhīb