"The sun was eclipsed during the time of the Messenger of Allah ﷺ, and the Prophet ﷺ commanded a caller to call out that prayer was about to begin in congregation. So they gathered and formed rows, and he led them in prayer, bowing four times in two rak'ahs and prostrating four times." (Using translation from Nasāʾī 1465)  

خَسَفَتِ الشَّمْسُ عَلَى عَهْدِ رَسُولِ اللهِ ﷺ فَأَمَرَ النَّبِيُّ ﷺ مُنَادِيًا فَنَادَى إِنَّ الصَّلَاةَ جَامِعَةٌ فَاجْتَمَعُوا وَاصْطَفُّوا فَصَلَّى بِهِمْ أَرْبَعَ رَكَعَاتٍ فِي رَكْعَتَيْنِ وَأَرْبَعَ سَجَدَاتٍ