Congregational Prayer and Its Virtue
Man Lā Yaḥḍuruh al-Faqīh|Volume 1|Book 1|Chapter 57
وَ سَأَلَ عُمَرُ بْنُ يَزِيدَ أَبَا عَبْدِ اَللَّهِ عَلَيْهِ اَلسَّلاَمُ: عَنْ إِمَامٍ لاَ بَأْسَ بِهِ فِي جَمِيعِ أُمُورِهِ عَارِفٍ غَيْرَ أَنَّهُ يُسْمِعُ أَبَوَيْهِ اَلْكَلاَمَ اَلْغَلِيظَ اَلَّذِي يَغِيظُهُمَا أَقْرَأُ خَلْفَهُ قَالَ «لاَ، تَقْرَأُ خَلْفَهُ مَا لَمْ يَكُنْ عَاقّاً قَاطِعاً.
Umar ibn Yazid asked Imam Jafar ibn Muhammad Al-Sadiq عليه السلام about an Imam who is generally good in all his affairs and knowledgeable, but he raises his voice and speaks harshly to his parents, causing them distress. He asked: "Should I pray behind him?" He عليه السلام replied: "No, do not pray behind him as long as he is not openly defiant and severing ties”.
- Ṣaḥīḥ al-Faqīh, p. 52