Arabic Text
حَدَّثَنَا مُسْلِمٌ، وَمُعَاذُ بْنُ فَضَالَةَ، قَالاَ أَخْبَرَنَا هِشَامٌ، عَنْ يَحْيَى، عَنْ أَبِي سَلَمَةَ، قَالَ رَأَيْتُ أَبَا هُرَيْرَةَ ـ رضى الله عنه ـ قَرَأَ {إِذَا السَّمَاءُ انْشَقَّتْ} فَسَجَدَ بِهَا فَقُلْتُ يَا أَبَا هُرَيْرَةَ، أَلَمْ أَرَكَ تَسْجُدُ قَالَ لَوْ لَمْ أَرَ النَّبِيَّ صلى الله عليه وسلم يَسْجُدُ لَمْ أَسْجُدْ.
English Translation
Narrated Abu Salma: I saw Abu Huraira reciting Idha-Sama' un-Shaqqat and he prostrated during its recitation. I asked Abu Huraira, "Didn't I see you prostrating?" Abu Huraira said, "Had I not seen the Prophet prostrating, I would not have prostrated."
This hadith is from Sahih al-Bukhari, the most rigorously authenticated collection in Islamic scholarship. No editorial opinion is added.