Chapter on the Qiblah (Direction of Prayer)
Tahdhīb al-Aḥkām|Volume 2|Book 1|Chapter 5
عَنْهُ عَنْ أَحْمَدَ عَنْ أَبِيهِ عَنْ عَبْدِ اَللَّهِ بْنِ اَلْمُغِيرَةِ عَنِ اَلْقَاسِمِ بْنِ اَلْوَلِيدِ قَالَ: سَأَلْتُهُ عَنْ رَجُلٍ تَبَيَّنَ لَهُ وَ هُوَ فِي اَلصَّلاَةِ أَنَّهُ عَلَى غَيْرِ اَلْقِبْلَةِ قَالَ« يَسْتَقْبِلُهَا إِذَا أُثْبِتَ ذَلِكَ وَ إِنْ كَانَ قَدْ فَرَغَ مِنْهَا فَلاَ يُعِيدُهَا»
Narrated from him from Ahmad from his father from Abdullah ibn al-Mughirah from al-Qasim ibn al-Walid, who said:
I asked him about a man who realizes during his prayer that he is not facing the qiblah. Imam عليه السلام said: "He should turn toward it if that is confirmed. But if he has already finished the prayer, then he does not need to repeat it."
- Tahdhīb al-Aḥkām fī Sharḥ al-Muqniʿah, vol. 2, p. 52
- Ṣaḥīḥ al-Tahdhīb