Volume 2, Book 19, Number 180:
Narrated Abu Salma:
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 prostrat –
ing, I would not have prostrated.”