Congregational Prayer and Its Virtue
Man Lā Yaḥḍuruh al-Faqīh|Volume 1|Book 1|Chapter 57
وَ رَوَى زُرَارَةُ وَ مُحَمَّدُ بْنُ مُسْلِمٍ عَنْ أَبِي جَعْفَرٍ عَلَيْهِ اَلسَّلاَمُ أَنَّهُ قَالَ كَانَ أَمِيرُ اَلْمُؤْمِنِينَ عَلَيْهِ اَلسَّلاَمُ يَقُولُ: «مَنْ قَرَأَ خَلْفَ إِمَامٍ يَأْتَمُّ بِهِ فَمَاتَ بُعِثَ عَلَى غَيْرِ فِطْرَةٍ.
Zurarah and Muhammad ibn Muslim narrated from Imam Muhammad ibn Ali Al-Baqir عليه السلام that He said: Amir al-Mu'minin عليه السلام used to say: "Whoever recites (aloud) behind an Imam whom he follows (in prayer) and then dies will be resurrected on a different (incorrect) natural disposition (fitra)."
- Ṣaḥīḥ al-Faqīh