Abu Hurayrah recited to them "When the sky is split asunder" [Inshiqaq 84:1] and prostrated during it. When he finished, he informed them that the Messenger of Allah ﷺ had prostrated during this surah.
أن أبا هريرة قرأ لهم: {إذا السماء أنشقت} فسجد فيها. فلما انصرف أخبرهم أن رسول الله ﷺ سجد فيها.
Malik narrated it in the Quran chapter (12), from Abdullah bin Yazid, freedman of Aswad bin Sufyan, from Abu Salama bin Abdul-Rahman, and he related it.Muslim narrated it in the Mosques chapter (578) through the route of Malik, with the same wording, and he related it.The two sheikhs, Bukhari in the Prostration of the Quran chapter (1074) and Muslim, both narrated it through the route of Hisham (Dastawai), from Yahya bin Abu Kathir, from Abu Salama, who said, "I saw Abu Hurairah recite "When the sky splits apart" [Inshiqaq 84:1] and prostrate at it. I said, 'Abu Hurairah, did I not see you prostrating?' He said, 'If I had not seen the Prophet ﷺ prostrate, I would not prostrate.'"The wording given is that of Bukhari, while Muslim referred back to the wording of Malik.As for Abu Salama's statement, "Did I not see you prostrating?" it has been said that this is a rhetorical question expressing disapproval on the part of Abu Salama, indicating that the common practice continued to differ from this. It has also been established regarding Abu Rafi, who is Nuqai the Madinan goldsmith, later a resident of Basra, well known by his kunya, and one of the senior Successors, that he likewise objected to Abu Hurairah, as will come in the hadith that follows this one. However, once Abu Hurairah informed Abu Salama and Abu Rafi of the sunnah on this matter, the two of them fell silent and did not argue against him by pointing to a practice that contradicted it.