The Messenger of Allah ﷺ said, "Beautify the Quran with your voices."
قال رسول الله ﷺ: زينوا القرآن بأصواتكم.
No references are available.
Narrated by Abu Dawud (1468), Nasai (1015), Ibn Majah (1342), Ahmad (18494), and Darimi (3543), and graded sahih by Ibn Hibban (479) and Hakim (1/571), all of them through various chains from Talha bin Musarrif, from Abdul-Rahman bin Awsaja, from Bara bin Azib, and he mentioned it. Its chain of transmission is sahih.Darimi also narrated it (3544) with another sahih chain, adding, "For a beautiful voice increases the Quran in beauty."