Yahya related to me from Malik from Abdullah ibn Yazid, the mawla of al Aswad ibn Sufyan, from Abu Salama ibn Abd ar Rahman that Abu Hurayra recited al-Inshiqaq (Sura 84) to them and prostrated in it. When he had finished he told them that the Messenger of Allah ﷺ had prostrated in it.  

أَنَّ أَبَا هُرَيْرَةَ قَرَأَ لَهُمْ إِذَا السَّمَاءُ انْشَقَّتْ فَسَجَدَ فِيهَا فَلَمَّا انْصَرَفَ أَخْبَرَهُمْ أَنَّ رَسُولَ اللَّهِ ﷺ سَجَدَ فِيهَا  

[Machine] I saw Abu Huraira prostrating when the sky split open. I said, "Do you prostrate in it?" He said, "Indeed, the Prophet ﷺ prostrated in it."  

رَأَيْتُ أَبَا هُرَيْرَةَ سَجَدَ فِي إِذَا السَّمَاءُ انْشَقَّتْ قُلْتُ تَسْجُدُ فِيهَا قَالَ إِنَّ النَّبِيَّ ﷺ سَجَدَ فِيهَا  

[Machine] I saw Abu Huraira prostrating when the sky split, so I said, "You are prostrating in a surah in which we do not prostrate." He said, "Indeed, I saw the Messenger of Allah ﷺ prostrating in it."  

رَأَيْتُ أَبَا هُرَيْرَةَ سَجَدَ فِي إِذَا السَّمَاءُ انْشَقَّتْ فَقُلْتُ سَجَدْتَ فِي سُورَةٍ مَا نَسْجَدُ فِيهَا قَالَ إِنِّي رَأَيْتُ رَسُولَ اللهِ ﷺ يَسْجُدُ فِيهَا