Chapter on the Rulings of Congregational Prayer (the Minimum Number for Congregational Prayer, the Description of the Imam, Who Is to Be Followed and Who Is Not to Be Followed, Recitation Behind Both of Them, the Rulings of Those Led in Prayer, and Other Such Rulings Related to It)

Tahdhīb al-Aḥkām|Volume 3|Book 1|Chapter 3

Tahdhīb al-Aḥkām

Volume 3, Book 1, Chapter 3

Chapter on the Rulings of Congregational Prayer (the Minimum Number for Congregational Prayer, the Description of the Imam, Who Is to Be Followed and Who Is Not to Be Followed, Recitation Behind Both of Them, the Rulings of Those Led in Prayer, and Other Such Rulings Related to It)

Hadith #53

رَوَى مُحَمَّدُ بْنُ يَعْقُوبَ عَنْ عَلِيِّ بْنِ إِبْرَاهِيمَ عَنْ أَبِيهِ عَنِ اِبْنِ أَبِي عُمَيْرٍ عَنْ بَعْضِ أَصْحَابِنَا عَنْ أَبِي عَبْدِ اَللَّهِ عَلَيْهِ اَلسَّلاَمُ: فِي قَوْمٍ خَرَجُوا مِنْ خُرَاسَانَ أَوْ بَعْضِ اَلْجِبَالِ وَ كَانَ يَؤُمُّهُمْ رَجُلٌ فَلَمَّا صَارُوا إِلَى اَلْكُوفَةِ عَلِمُوا أَنَّهُ يَهُودِيٌّ قَالَ« لاَ يُعِيدُونَ»

Muhammad ibn Yaqub narrated from Ali ibn Ibrahim, from his father, from Ibn Abi Umayr, from some of our companions, from Abu Abdillah , peace be upon him: Imam al-Sadiq was asked regarding a group who had departed from Khurasan or from some of the mountainous regions, and a man was leading them in prayer. When they reached Kufah, they came to know that he was a Jew. Imam said: “They do not have to repeat (their prayers).”

Ali Akbar al-Ghaffari
Tahdhīb al-Aḥkām fī Sharḥ al-Muqniʿah, vol. 3, p. 44