The Prayer of the Two Eids
Man Lā Yaḥḍuruh al-Faqīh|Volume 1|Book 1|Chapter 79
وَ رَوَى سَمَاعَةُ بْنُ مِهْرَانَ عَنِ اَلصَّادِقِ عَلَيْهِ اَلسَّلاَمُ أَنَّهُ قَالَ: «لاَ صَلاَةَ فِي اَلْعِيدَيْنِ إِلاَّ مَعَ إِمَامٍ وَ إِنْ صَلَّيْتَ وَحْدَكَ فَلاَ بَأْسَ.
Sama’a bin Mehran narrated from Imam Jafar ibn Muhammad Al-Sadiq عليه السلام who said: "There is no prayer on the two Eids (Eid al-Fitr and Eid al-Adha) except with an Imam, but if you pray alone, there is no issue."
- Ṣaḥīḥ al-Faqīh, p. 71