Abu Hurairah (led them in prayer and) recited: "When the heaven is split asunder." and prostrated during it. When he had finished praying, he told them that the Messenger of Allah ﷺ had prostrated during it.  

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

"The Messenger of Allah ﷺ prostrated during: 'When the heaven is split asunder.'"  

سَجَدَ رَسُولُ اللَّهِ ﷺ فِي { إِذَا السَّمَاءُ انْشَقَّتْ }  

"We prostrated with the Messenger of Allah ﷺ during: When the heaven is split asunder and Read! In the Name of your Lord."  

سَجَدْنَا مَعَ النَّبِيِّ ﷺ فِي { إِذَا السَّمَاءُ انْشَقَّتْ } وَ { اقْرَأْ بِاسْمِ رَبِّكَ }  

(Another chain) from Abu Hurairah, with similar.  

عَنْ أَبِي هُرَيْرَةَ مِثْلَهُ  

"Abu Bakr and Umar prostrated during: 'When the heaven is split asunder,' as did the one who was better than them (the Prophet ﷺ). "  

سَجَدَ أَبُو بَكْرٍ وَعُمَرُ ؓ فِي { إِذَا السَّمَاءُ انْشَقَّتْ } وَمَنْ هُوَ خَيْرٌ مِنْهُمَا