Sahih Muslim Book 4, Hadith Number 909.

Chapter : Recitation of the Qur’an loudly in the dawn prayer.

Abu Qatada reported it on the authority of his father: The Messenger of Allah (may peace be upon him) would recite in the first two rak’ahs of the noon and afternoon prayers the opening chapter of the Book and another surah. He would sometimes recite loud enough to make audible to us the verse and would recite in the last two rak’ahs Surat al-Faitiha (only).