The Shaykh (Imam al-Bayhaqi) (may Allah have mercy on him) said: "It has been narrated from the Prophet (peace and blessings be upon him) that he (peace and blessings be upon him) said: 'Allah Almighty does not listen to anything as attentively as He listens to a prophet who recites the Qur'an with a beautiful, melodious voice.'"
Sayyiduna Abu Hurayrah (may Allah be pleased with him) said that he heard the Messenger of Allah (peace and blessings be upon him) saying: "Allah does not listen to anything as attentively as He listens to a prophet with a beautiful voice who recites the Qur'an aloud."
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الشهادات / 21040