Chapter on Etiquettes of Causes Requiring Purification
Tahdhīb al-Aḥkām|Volume 1|Book 1|Chapter 3
وَ أَمَّا مَا رَوَاهُ مُحَمَّدُ بْنُ عَلِيِّ بْنِ مَحْبُوبٍ عَنْ أَحْمَدَ بْنِ مُحَمَّدٍ عَنْ مُوسَى بْنِ اَلْقَاسِمِ عَنْ عَلِيِّ بْنِ جَعْفَرٍ عَنْ أَخِيهِ مُوسَى بْنِ جَعْفَرٍ عَلَيْهِمَا اَلسَّلاَمُ قَالَ: سَأَلْتُهُ عَنْ رَجُلٍ ذَكَرَ وَهُوَ فِي صَلاَتِهِ أَنَّهُ لَمْ يَسْتَنْجِ مِنَ اَلْخَلاَءِ قَالَ« يَنْصَرِفُ وَ يَسْتَنْجِي مِنَ اَلْخَلاَءِ وَ يُعِيدُ اَلصَّلاَةَ وَ إِنْ ذَكَرَ وَ قَدْ فَرَغَ مِنْ صَلاَتِهِ أَجْزَأَهُ ذَلِكَ وَ لاَ إِعَادَةَ عَلَيْهِ».
Muhammad bin Ali bin Mahbub narrated from Ahmad bin Muhammad, from Musa bin Al-Qasim, from Ali bin Ja‘far, from his brother Imam Musa bin Ja‘far عليه السلام, who said:
(Narrator said) "I asked Imam عليه السلام about a man who, during his prayer, remembered that he had not cleansed himself (istinja) after relieving himself. Imam عليه السلام said: 'He should break off the prayer, cleanse himself (istinja) after relieving himself, and repeat the prayer. However, if he remembers after completing the prayer, it suffices for him, and he does not need to repeat the prayer.'"
- Tahdhīb al-Aḥkām fī Sharḥ al-Muqniʿah, vol. 1, p. 53
- Ṣaḥīḥ al-Tahdhīb