From Sahih Bukhari (Hadith 1074):
Narrated Abu Salama:I saw Abu Huraira reciting Idha-Sama' un-Shaqqat and he prostrated during its recitation. I asked Abu Huraira, "Didn't I see you prostrating?" Abu Huraira said, "Had I not seen the Prophet (ﷺ) prostrating, I would not have prostrated
Reference: Bukhari 1074