Chapter on the Rulings on Forgetfulness (Ahkam al-Sahw)
Tahdhīb al-Aḥkām|Volume 2|Book 1|Chapter 16
اَلْحُسَيْنُ بْنُ سَعِيدٍ عَنْ فَضَالَةَ عَنْ عَبْدِ اَللَّهِ بْنِ سِنَانٍ عَنْ أَبِي عَبْدِ اَللَّهِ عَلَيْهِ اَلسَّلاَمُ قَالَ:« إِذَا نَسِيتَ شَيْئاً مِنَ اَلصَّلاَةِ رُكُوعاً أَوْ سُجُوداً أَوْ تَكْبِيراً ثُمَّ ذَكَرْتَ فَاصْنَعِ اَلَّذِي فَاتَكَ سَوَاءً»
Al-Husayn ibn Sa‘id from Faddalah from Abdullah ibn Sinan:
Abu Abdillah عليه السلام, peace be upon him, said: "If you forget something from the prayer, whether bowing, prostration, or takbir, and then you remember it, then perform whatever you missed, just the same."
- Tahdhīb al-Aḥkām fī Sharḥ al-Muqniʿah, vol. 2, p. 376
- Ṣaḥīḥ al-Tahdhīb