Sahih Bukhari
Prostration During Recital of Quran
Volume: 002 / Book Number: 019 / Hadith 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 prostrating, I would not have prostrated."