(6) The Book on Traveling
أَبْوَابُ السَّفَرِ
(50) Chapter: What Has Been Related About The Prostrations (Of Recitation) In: When The Heaven If Split Asunder And: Read! In The Name Of Your Lord Who Has Created
Jami` at-Tirmidhi 573 
Abu Hurairah narrated:
"We prostrated with the Messenger of Allah in: 'Read! In the Name of your Lord' and 'When the heaven is split asunder.'"
حَدَّثَنَا قُتَيْبَةُ بْنُ سَعِيدٍ، حَدَّثَنَا سُفْيَانُ بْنُ عُيَيْنَةَ، عَنْ أَيُّوبَ بْنِ مُوسَى، عَنْ عَطَاءِ بْنِ مِينَاءَ، عَنْ أَبِي هُرَيْرَةَ، قَالَ سَجَدْنَا مَعَ رَسُولِ اللَّهِ صلى الله عليه وسلم فِي ‏(‏اقْرَأْ بِاسْمِ رَبِّكَ الَّذِي خَلَقَ ‏)‏ وَ ‏(‏إِذََا السَّمَاءُ انْشَقَّتْ ‏)
Grade :  Sahih (Darussalam)
Reference : Jami` at-Tirmidhi 573
In-book reference : Book 6, Hadith 30
English translation : Vol. 2, Book 1, Hadith 573