كتاب الافتتاح
11  
The Book of the Commencement of the Prayer
(51)
Chapter: The Prostration in: "When the heaven is split asunder"
(51)
باب السُّجُودِ فِي ‏{‏ إِذَا السَّمَاءُ انْشَقَّتْ ‏}
Sunan an-Nasa'i 965
It was narrated that Abu Hurairah said:
"Abu Bakr and Umar prostrated during: 'When the heaven is split asunder,' as did the one who was better than them (the Prophet (ﷺ)). "
أَخْبَرَنَا عَمْرُو بْنُ عَلِيٍّ، قَالَ حَدَّثَنَا يَحْيَى، قَالَ حَدَّثَنَا قُرَّةُ بْنُ خَالِدٍ، عَنْ مُحَمَّدِ بْنِ سِيرِينَ، عَنْ أَبِي هُرَيْرَةَ، قَالَ سَجَدَ أَبُو بَكْرٍ وَعُمَرُ - رضى الله عنهما - فِي ‏{‏ إِذَا السَّمَاءُ انْشَقَّتْ ‏}‏ وَمَنْ هُوَ خَيْرٌ مِنْهُمَا ‏.‏
Grade: Sahih (Darussalam)
Reference : Sunan an-Nasa'i 965
In-book reference : Book 11, Hadith 90
English translation : Vol. 2, Book 11, Hadith 966