Congregational Prayer and Its Virtue
Man Lā Yaḥḍuruh al-Faqīh|Volume 1|Book 1|Chapter 57
وَقَالَ أَبُو جَعْفَرٍ عَلَيْهِ اَلسَّلاَمُ: إِنَّ رَسُولَ اَللَّهِ صَلَّى اَللَّهُ عَلَيْهِ وَ آلِهِ صَلَّى بِأَصْحَابِهِ جَالِساً فَلَمَّا فَرَغَ قَالَ «لاَ يَؤُمَّنَّ أَحَدُكُمْ بَعْدِي جَالِساً.
Imam Muhammad ibn Ali Al-Baqir عليه السلام said: "The Messenger of Allah صلى الله عليه وعلى آله وسلم once led his companions in prayer while seated. When he finished, He صلى الله عليه وعلى آله وسلم said: 'None of you should lead others in prayer while seated after me.'".
- Ṣaḥīḥ al-Faqīh, p. 53