Prayer (Kitab Al-Salat): Prostration while reciting the Qur'an
Dawud :: Book 7 : Hadith 1397
Narrated Uqbah ibn Amir:
I said to the Apostle of Allah (peace_be_upon_him): Are there two prostrations in Surah al-Hajj? He replied: Yes; if anyone does not make two prostrations, he should not recite them.