Chapter 7: Prayer (Kitab Al-Salat): Prostration while reciting the Qur'an
Narrated Amr ibn al-' As: The Prophet (ﷺ) taught me fifteen prostrations while reciting the Qur' an, including three in al-Mufassal and two in Surah al-Hajj. Abu Dawud said: Abu al-Darda' has reported eleven prostrations from the Prophet (ﷺ), but chain of this tradition is weak.
Sunan Abi Dawud 1401