Sunan an-Nasa'i, Volume 2, Book 16, Hadith 1474 (DarusSalam) ⓘ

It was narrated from Az-Zuhri, from 'Urwah, that : Aishah said: "The sun was eclipsed during the lifetime of the Messenger of Allah and it was called out: 'As-salatu jam'iah (prayer is about to begin in congregation).' So the people gathered and the Messenger of Allah led them in prayer, bowing four times in two rak'ahs and prostrating four times."

أَخْبَرَنَا إِسْحَاقُ بْنُ إِبْرَاهِيمَ، قَالَ حَدَّثَنَا الْوَلِيدُ بْنُ مُسْلِمٍ، عَنِ الأَوْزَاعِيِّ، عَنِ الزُّهْرِيِّ، عَنْ عُرْوَةَ، عَنْ عَائِشَةَ، قَالَتْ خَسَفَتِ الشَّمْسُ عَلَى عَهْدِ رَسُولِ اللَّهِ صلى الله عليه وسلم فَنُودِيَ الصَّلاَةُ جَامِعَةٌ فَاجْتَمَعَ النَّاسُ فَصَلَّى بِهِمْ رَسُولُ اللَّهِ صلى الله عليه وسلم أَرْبَعَ رَكَعَاتٍ فِي رَكْعَتَيْنِ وَأَرْبَعَ سَجَدَاتٍ ‏‏.‏‏