Chapter on the Rulings on Forgetfulness (Ahkam al-Sahw)
Tahdhīb al-Aḥkām|Volume 2|Book 1|Chapter 16
عَنْهُ عَنْ فَضَالَةَ عَنِ اَلْعَلاَءِ عَنْ مُحَمَّدِ بْنِ مُسْلِمٍ عَنْ أَبِي جَعْفَرٍ عَلَيْهِ اَلسَّلاَمُ قَالَ:« إِذَا كَثُرَ عَلَيْكَ اَلسَّهْوُ فَامْضِ عَلَى صَلاَتِكَ فَإِنَّهُ يُوشِكُ أَنْ يَدَعَكَ إِنَّمَا هُوَ مِنَ اَلشَّيْطَانِ»
From him, from Faddalah, from al-‘Ala’, from Muhammad ibn Muslim:
Abu Ja‘far عليه السلام, peace be upon him, said: "If forgetfulness becomes frequent for you, then proceed with your prayer, for it is likely to leave you. Indeed, it is from Shaytan."
- Tahdhīb al-Aḥkām fī Sharḥ al-Muqniʿah, vol. 2, p. 369
- Ṣaḥīḥ al-Tahdhīb, p. 231