Chapter on the Rulings on Forgetfulness (Ahkam al-Sahw)
Tahdhīb al-Aḥkām|Volume 2|Book 1|Chapter 16
عَنْهُ عَنْ مُحَمَّدِ بْنِ اَلْحُسَيْنِ عَنْ مُوسَى بْنِ اَلْقَاسِمِ عَنْ عَلِيِّ بْنِ جَعْفَرٍ عَنْ أَخِيهِ مُوسَى بْنِ جَعْفَرٍ عَلَيْهِمَا اَلسَّلاَمُ قَالَ: سَأَلْتُهُ عَنْ رَجُلٍ يُصَلِّي خَلْفَ إِمَامٍ لاَ يَدْرِي كَمْ صَلَّى هَلْ عَلَيْهِ سَهْوٌ قَالَ« لاَ»
From him, from Muhammad ibn al-Husayn from Musa ibn al-Qasim from Ali ibn Ja‘far from his brother (Imam) Musa ibn Ja‘far عليه السلام, peace be upon them both, who said:
I asked Imam عليه السلام about a man who is praying behind an Imam (of prayer) and does not know how many rak‘ahs have been prayed, does he have to perform anything for forgetfulness? Imam عليه السلام said: "No."
- Tahdhīb al-Aḥkām fī Sharḥ al-Muqniʿah, vol. 2, p. 377
- Ṣaḥīḥ al-Tahdhīb