Muwatta Malik 481
موطأ مالك#481Sahihحَدَّثَنِي يَحْيَى، عَنْ مَالِكٍ، عَنْ عَبْدِ اللَّهِ بْنِ يَزِيدَ، مَوْلَى الأَسْوَدِ بْنِ سُفْيَانَ عَنْ أَبِي سَلَمَةَ بْنِ عَبْدِ الرَّحْمَنِ، أَنَّ أَبَا هُرَيْرَةَ، قَرَأَ لَهُمْ {إِذَا السَّمَاءُ انْشَقَّتْ} فَسَجَدَ فِيهَا فَلَمَّا انْصَرَفَ أَخْبَرَهُمْ أَنَّ رَسُولَ اللَّهِ صلى الله عليه وسلم سَجَدَ فِيهَا .
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, may Allah bless him and grant him peace, had prostrated in it
Scholarly Authentication
The label above is the grade most of these scholars gave — one dissenting opinion no longer speaks for all of them. If any scholar calls a narration fabricated, that verdict is shown instead, whatever the others say. Each scholar's own wording:
In-book reference: 15:12