Prostration During Recital of Qur'an

Bukhari :: Book 2 :: Volume 19 :: Hadith 173

Narrated 'Abdullah bin Masud :

The Prophet recited Suratan-Najm (103) at Mecca and prostrated while reciting it and those who were with him did the same except an old man who took a handful of small stones or earth and lifted it to his forehead and said, "This is sufficient for me." Later on, I saw him killed as a non-believer.