بُلُوغُ الْمَرَامِ
Bulugh al-Maram 504
The Book of Prayer
وَعَنْ عَائِشَةَ رَضِيَ اَللَّهُ عَنْهَا: { أَنَّ اَلنَّبِيَّ - صلى الله عليه وسلم -جَهَرَ فِي صَلَاةِ اَلْكُسُوفِ [1] بِقِرَاءَتِهِ, فَصَلَّى أَرْبَعَ رَكَعَاتٍ فِي رَكْعَتَيْنِ, وَأَرْبَعَ سَجَدَاتٍ } مُتَّفَقٌ عَلَيْهِ, وَهَذَا لَفْظُ مُسْلِمٍ [2] .
Narrated 'Aishah (RA): Allah's Messenger (ﷺ) recited (from the Qur'an) in an audible voice in the prayer at an eclipse, and prayed two Rak'at in which he bowed four times and prostrated four times." [Agreed upon. This is the wording of Muslim].
Sunnah.com reference: Book 2, Hadith 433