The Chapter of the Qibla
Man Lā Yaḥḍuruh al-Faqīh|Volume 1|Book 1|Chapter 43
وَ رَوَى زُرَارَةُ عَنْ أَبِي جَعْفَرٍ عَلَيْهِ اَلسَّلاَمُ أَنَّهُ قَالَ: «لاَ صَلاَةَ إِلاَّ إِلَى اَلْقِبْلَةِ» قَالَ قُلْتُ وَ أَيْنَ حَدُّ اَلْقِبْلَةِ قَالَ «مَا بَيْنَ اَلْمَشْرِقِ وَ اَلْمَغْرِبِ قِبْلَةٌ كُلُّهُ» قَالَ قُلْتُ فَمَنْ صَلَّى لِغَيْرِ اَلْقِبْلَةِ أَوْ فِي يَوْمِ غَيْمٍ فِي غَيْرِ اَلْوَقْتِ قَالَ «يُعِيدُ.
Zurarah narrated from Imam Muhammad ibn Ali Al-Baqir عليه السلام that He said: "There is no prayer except toward the Qiblah." Zurarah asked: "And where is the boundary of the Qiblah?" Imam عليه السلام replied: "The entire area between the east and the west is the Qiblah." Zurarah then asked: "What if someone prays facing a direction other than the Qiblah, or on a cloudy day when they miss the correct time?" Imam عليه السلام said: "They must repeat the prayer”.
- Ṣaḥīḥ al-Faqīh