أَخْبَرَنَا إِسْحَاقُ بْنُ إِبْرَاهِيمَ، قَالَ أَنْبَأَنَا الْمُعْتَمِرُ، عَنْ قُرَّةَ، عَنِ ابْنِ سِيرِينَ، عَنْ أَبِي هُرَيْرَةَ، قَالَ سَجَدَ أَبُو بَكْرٍ وَعُمَرُ - رضى الله عنهما - وَمَنْ هُوَ خَيْرٌ مِنْهُمَا صلى الله عليه وسلم فِي { إِذَا السَّمَاءُ انْشَقَّتْ } وَ { اقْرَأْ بِاسْمِ رَبِّكَ } .
It was narrated that Abu Hurairah said: "Abu Bakr and Umar, may Allah be pleased with them both, and the one who was better than them prostrated during 'When the heaven is split asunder' and 'Read! In the name of your Lord.'" Translation Not Available
Book Ref: Sunan An Nisai Book 11 Hadith 966
Web Ref: Sunan An Nisai Vol 2 Book 11 Hadith 967