Sahih Bukhari Volume 2, Book 16, Hadith 1066

حَدَّثَنَا مُحَمَّدُ بْنُ مِهْرَانَ، قَالَ حَدَّثَنَا الْوَلِيدُ، قَالَ أَخْبَرَنَا ابْنُ نَمِرٍ، سَمِعَ ابْنَ شِهَابٍ، عَنْ عُرْوَةَ، عَنْ عَائِشَةَ ـ رضى الله عنها ـ جَهَرَ النَّبِيُّ صلى الله عليه وسلم فِي صَلاَةِ الْخُسُوفِ بِقِرَاءَتِهِ، فَإِذَا فَرَغَ مِنْ قِرَاءَتِهِ كَبَّرَ فَرَكَعَ، وَإِذَا رَفَعَ مِنَ الرَّكْعَةِ قَالَ سَمِعَ اللَّهُ لِمَنْ حَمِدَهُ، رَبَّنَا وَلَكَ الْحَمْدُ‏.‏ ثُمَّ يُعَاوِدُ الْقِرَاءَةَ فِي صَلاَةِ الْكُسُوفِ، أَرْبَعَ رَكَعَاتٍ فِي رَكْعَتَيْنِ وَأَرْبَعَ سَجَدَاتٍ‏.‏

Narrated By 'Aisha : The Prophet (p.b.u.h) recited (the Qur'an) aloud during the eclipse prayer and when he had finished the eclipse prayer he said the Takbir and bowed. When he stood straight from bowing he would say "Sami 'al-l-ahu Lyman hamidah Rabbana walaka-l-hamd." And he would again start reciting. In the eclipse prayer there are four bowing and four prostrations in two Rakat.