Mukhtasar Bukhari

Narrated Ibn Abbas (may Allah be pleased with them) that the Prophet (peace and blessings of Allah be upon him) recited aloud in those prayers in which he was commanded to do so, and remained silent in those in which he was commanded to do so. And "Your Lord is not forgetful" (that He would give a wrong command by mistake. Surah Maryam: 64). "Indeed, for you in the Messenger of Allah (the actions and sayings) is a good example." (Surah Al-Ahzab: 21).