وَيُصَلِّي بِالنَّاسِ الْإِمَامُ الَّذِي يُصَلِّي بِهِمُ الْجُمُعَةَ، فَإِنْ لَمْ يَحْضُرِ الْإِمَامُ صَلَّاهَا النَّاسُ فُرَادَى.
Translation: The imam who leads Friday prayer leads the people for the eclipse prayer. If that imam is absent, people pray it individually.
The appointed Friday-prayer leader is named as the leader of the eclipse congregation. In his absence the prayer itself remains possible, but people perform it individually rather than under the described congregation.