Sunan an-Nasa'i #961 · The Book of the Commencement of the Prayer

Sunan an-Nasa'iIt was narrated from Abu Salamah bin Abdur- Rahman that
Sunan an-Nasa'i · Book 11 · The Book of the Commencement of the Prayer
Sunan an-Nasa'i · كتاب 11 · كتاب افتتاح الصلاة
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
أَخْبَرَنَا قُتَيْبَةُ، عَنْ مَالِكٍ، عَنْ عَبْدِ اللَّهِ بْنِ يَزِيدَ، عَنْ أَبِي سَلَمَةَ بْنِ عَبْدِ الرَّحْمَنِ، أَنَّ أَبَا هُرَيْرَةَ، قَرَأَ بِهِمْ ‏{‏ إِذَا السَّمَاءُ انْشَقَّتْ ‏}‏ فَسَجَدَ فِيهَا فَلَمَّا انْصَرَفَ أَخْبَرَهُمْ أَنَّ رَسُولَ اللَّهِ صلى الله عليه وسلم سَجَدَ فِيهَا ‏.‏
Reference : Sunan an-Nasa'i 961In-book reference : Book 11, Hadith 86