Musnad Ahmad 658:209

Muhammad ibn Abdullah Abu Ahmad narrated to us, Mis'ar narrated to us, from 'Adi ibn Thabit, from al-Bara' who said: "I heard the Prophet, peace and blessings of Allah be upon him, reciting in the 'Isha' prayer: 'By the Fig and the Olive' (Surah At-Tin). I have never heard anyone with a better voice than him when he recited, peace and blessings of Allah be upon him."